Home / 10,387.38-14,320.98-7,690.08

Finding the Fourth Proportional to 10,387.38, 14,320.98 and 7,690.08

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Solution

The fourth proportional to 10,387.38, 14,320.98 and 7,690.08 is: 10,602.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.38 : 14,320.98 = 7,690.08 : x
  2. Step 2: Convert to fraction form
    10,387.38/14,320.98 = 7,690.08/x
  3. Step 3: Cross multiply
    10,387.38x = 14,320.98 × 7,690.08
  4. Step 4: Simplify right side
    10,387.38x = 110,129,481.88
  5. Step 5: Solve for x
    x = 110,129,481.88/10,387.38
  6. Step 6: Final answer
    x = 10,602.24

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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.