Home / 39,427.92-59,142.78-13,134.78

Finding the Fourth Proportional to 39,427.92, 59,142.78 and 13,134.78

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Solution

The fourth proportional to 39,427.92, 59,142.78 and 13,134.78 is: 19,702.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.92 : 59,142.78 = 13,134.78 : x
  2. Step 2: Convert to fraction form
    39,427.92/59,142.78 = 13,134.78/x
  3. Step 3: Cross multiply
    39,427.92x = 59,142.78 × 13,134.78
  4. Step 4: Simplify right side
    39,427.92x = 776,827,403.89
  5. Step 5: Solve for x
    x = 776,827,403.89/39,427.92
  6. Step 6: Final answer
    x = 19,702.47

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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.