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Finding the Fourth Proportional to 39,300.80, 58,951.20 and 9,718.40

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Solution

The fourth proportional to 39,300.80, 58,951.20 and 9,718.40 is: 14,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,300.80 : 58,951.20 = 9,718.40 : x
  2. Step 2: Convert to fraction form
    39,300.80/58,951.20 = 9,718.40/x
  3. Step 3: Cross multiply
    39,300.80x = 58,951.20 × 9,718.40
  4. Step 4: Simplify right side
    39,300.80x = 572,911,342.08
  5. Step 5: Solve for x
    x = 572,911,342.08/39,300.80
  6. Step 6: Final answer
    x = 14,577.60

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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.