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Finding the Fourth Proportional to 17,140.80, 25,727.40 and 14,678.40

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Solution

The fourth proportional to 17,140.80, 25,727.40 and 14,678.40 is: 22,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,140.80 : 25,727.40 = 14,678.40 : x
  2. Step 2: Convert to fraction form
    17,140.80/25,727.40 = 14,678.40/x
  3. Step 3: Cross multiply
    17,140.80x = 25,727.40 × 14,678.40
  4. Step 4: Simplify right side
    17,140.80x = 377,637,068.16
  5. Step 5: Solve for x
    x = 377,637,068.16/17,140.80
  6. Step 6: Final answer
    x = 22,031.47

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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.