Home / 39,425.80-59,148.16-13,130.78

Finding the Fourth Proportional to 39,425.80, 59,148.16 and 13,130.78

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Solution

The fourth proportional to 39,425.80, 59,148.16 and 13,130.78 is: 19,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.80 : 59,148.16 = 13,130.78 : x
  2. Step 2: Convert to fraction form
    39,425.80/59,148.16 = 13,130.78/x
  3. Step 3: Cross multiply
    39,425.80x = 59,148.16 × 13,130.78
  4. Step 4: Simplify right side
    39,425.80x = 776,661,476.36
  5. Step 5: Solve for x
    x = 776,661,476.36/39,425.80
  6. Step 6: Final answer
    x = 19,699.32

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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.