Home / 38,628.12-53,306.18-21,632.21

Finding the Fourth Proportional to 38,628.12, 53,306.18 and 21,632.21

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Solution

The fourth proportional to 38,628.12, 53,306.18 and 21,632.21 is: 29,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,628.12 : 53,306.18 = 21,632.21 : x
  2. Step 2: Convert to fraction form
    38,628.12/53,306.18 = 21,632.21/x
  3. Step 3: Cross multiply
    38,628.12x = 53,306.18 × 21,632.21
  4. Step 4: Simplify right side
    38,628.12x = 1,153,130,625.39
  5. Step 5: Solve for x
    x = 1,153,130,625.39/38,628.12
  6. Step 6: Final answer
    x = 29,852.11

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.