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Finding the Fourth Proportional to 39,407.40, 59,111.10 and 13,114.80

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Solution

The fourth proportional to 39,407.40, 59,111.10 and 13,114.80 is: 19,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,407.40 : 59,111.10 = 13,114.80 : x
  2. Step 2: Convert to fraction form
    39,407.40/59,111.10 = 13,114.80/x
  3. Step 3: Cross multiply
    39,407.40x = 59,111.10 × 13,114.80
  4. Step 4: Simplify right side
    39,407.40x = 775,230,254.28
  5. Step 5: Solve for x
    x = 775,230,254.28/39,407.40
  6. Step 6: Final answer
    x = 19,672.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.