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Finding the Fourth Proportional to 29,420.19, 40,600.11 and 15,991.47

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Solution

The fourth proportional to 29,420.19, 40,600.11 and 15,991.47 is: 22,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,420.19 : 40,600.11 = 15,991.47 : x
  2. Step 2: Convert to fraction form
    29,420.19/40,600.11 = 15,991.47/x
  3. Step 3: Cross multiply
    29,420.19x = 40,600.11 × 15,991.47
  4. Step 4: Simplify right side
    29,420.19x = 649,255,441.06
  5. Step 5: Solve for x
    x = 649,255,441.06/29,420.19
  6. Step 6: Final answer
    x = 22,068.36

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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.