Home / 38,637.95-53,321.69-21,642.92

Finding the Fourth Proportional to 38,637.95, 53,321.69 and 21,642.92

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Solution

The fourth proportional to 38,637.95, 53,321.69 and 21,642.92 is: 29,867.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,637.95 : 53,321.69 = 21,642.92 : x
  2. Step 2: Convert to fraction form
    38,637.95/53,321.69 = 21,642.92/x
  3. Step 3: Cross multiply
    38,637.95x = 53,321.69 × 21,642.92
  4. Step 4: Simplify right side
    38,637.95x = 1,154,036,696.11
  5. Step 5: Solve for x
    x = 1,154,036,696.11/38,637.95
  6. Step 6: Final answer
    x = 29,867.96

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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.