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Finding the Fourth Proportional to 29,398.21, 40,569.15 and 15,969.90

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Solution

The fourth proportional to 29,398.21, 40,569.15 and 15,969.90 is: 22,038.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,398.21 : 40,569.15 = 15,969.90 : x
  2. Step 2: Convert to fraction form
    29,398.21/40,569.15 = 15,969.90/x
  3. Step 3: Cross multiply
    29,398.21x = 40,569.15 × 15,969.90
  4. Step 4: Simplify right side
    29,398.21x = 647,885,056.56
  5. Step 5: Solve for x
    x = 647,885,056.56/29,398.21
  6. Step 6: Final answer
    x = 22,038.25

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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.