Home / 14,387.20-19,857.40-9,668.75

Finding the Fourth Proportional to 14,387.20, 19,857.40 and 9,668.75

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Solution

The fourth proportional to 14,387.20, 19,857.40 and 9,668.75 is: 13,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.20 : 19,857.40 = 9,668.75 : x
  2. Step 2: Convert to fraction form
    14,387.20/19,857.40 = 9,668.75/x
  3. Step 3: Cross multiply
    14,387.20x = 19,857.40 × 9,668.75
  4. Step 4: Simplify right side
    14,387.20x = 191,996,186.61
  5. Step 5: Solve for x
    x = 191,996,186.61/14,387.20
  6. Step 6: Final answer
    x = 13,344.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.