Home / 28,001.61-38,657.06-21,614.46

Finding the Fourth Proportional to 28,001.61, 38,657.06 and 21,614.46

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Solution

The fourth proportional to 28,001.61, 38,657.06 and 21,614.46 is: 29,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.61 : 38,657.06 = 21,614.46 : x
  2. Step 2: Convert to fraction form
    28,001.61/38,657.06 = 21,614.46/x
  3. Step 3: Cross multiply
    28,001.61x = 38,657.06 × 21,614.46
  4. Step 4: Simplify right side
    28,001.61x = 835,551,369.02
  5. Step 5: Solve for x
    x = 835,551,369.02/28,001.61
  6. Step 6: Final answer
    x = 29,839.40

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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.