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Finding the Fourth Proportional to 39,358.80, 59,038.20 and 9,776.40

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Solution

The fourth proportional to 39,358.80, 59,038.20 and 9,776.40 is: 14,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.80 : 59,038.20 = 9,776.40 : x
  2. Step 2: Convert to fraction form
    39,358.80/59,038.20 = 9,776.40/x
  3. Step 3: Cross multiply
    39,358.80x = 59,038.20 × 9,776.40
  4. Step 4: Simplify right side
    39,358.80x = 577,181,058.48
  5. Step 5: Solve for x
    x = 577,181,058.48/39,358.80
  6. Step 6: Final answer
    x = 14,664.60

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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.