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Finding the Fourth Proportional to 38,865.03, 53,632.57 and 21,870.22

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Solution

The fourth proportional to 38,865.03, 53,632.57 and 21,870.22 is: 30,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,865.03 : 53,632.57 = 21,870.22 : x
  2. Step 2: Convert to fraction form
    38,865.03/53,632.57 = 21,870.22/x
  3. Step 3: Cross multiply
    38,865.03x = 53,632.57 × 21,870.22
  4. Step 4: Simplify right side
    38,865.03x = 1,172,956,105.07
  5. Step 5: Solve for x
    x = 1,172,956,105.07/38,865.03
  6. Step 6: Final answer
    x = 30,180.24

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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.