Home / 10,839.68-14,937.36-7,690.40

Finding the Fourth Proportional to 10,839.68, 14,937.36 and 7,690.40

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Solution

The fourth proportional to 10,839.68, 14,937.36 and 7,690.40 is: 10,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,839.68 : 14,937.36 = 7,690.40 : x
  2. Step 2: Convert to fraction form
    10,839.68/14,937.36 = 7,690.40/x
  3. Step 3: Cross multiply
    10,839.68x = 14,937.36 × 7,690.40
  4. Step 4: Simplify right side
    10,839.68x = 114,874,273.34
  5. Step 5: Solve for x
    x = 114,874,273.34/10,839.68
  6. Step 6: Final answer
    x = 10,597.57

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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.