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Finding the Fourth Proportional to 28,041.71, 38,675.57 and 17,971.07

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Solution

The fourth proportional to 28,041.71, 38,675.57 and 17,971.07 is: 24,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.71 : 38,675.57 = 17,971.07 : x
  2. Step 2: Convert to fraction form
    28,041.71/38,675.57 = 17,971.07/x
  3. Step 3: Cross multiply
    28,041.71x = 38,675.57 × 17,971.07
  4. Step 4: Simplify right side
    28,041.71x = 695,041,092.53
  5. Step 5: Solve for x
    x = 695,041,092.53/28,041.71
  6. Step 6: Final answer
    x = 24,785.98

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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.