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Finding the Fourth Proportional to 10,740.80, 16,078.80 and 9,574.40

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Solution

The fourth proportional to 10,740.80, 16,078.80 and 9,574.40 is: 14,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,740.80 : 16,078.80 = 9,574.40 : x
  2. Step 2: Convert to fraction form
    10,740.80/16,078.80 = 9,574.40/x
  3. Step 3: Cross multiply
    10,740.80x = 16,078.80 × 9,574.40
  4. Step 4: Simplify right side
    10,740.80x = 153,944,862.72
  5. Step 5: Solve for x
    x = 153,944,862.72/10,740.80
  6. Step 6: Final answer
    x = 14,332.72

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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.