Home / 10,436.04-15,643.13-7,658.55

Finding the Fourth Proportional to 10,436.04, 15,643.13 and 7,658.55

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Solution

The fourth proportional to 10,436.04, 15,643.13 and 7,658.55 is: 11,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,436.04 : 15,643.13 = 7,658.55 : x
  2. Step 2: Convert to fraction form
    10,436.04/15,643.13 = 7,658.55/x
  3. Step 3: Cross multiply
    10,436.04x = 15,643.13 × 7,658.55
  4. Step 4: Simplify right side
    10,436.04x = 119,803,654.97
  5. Step 5: Solve for x
    x = 119,803,654.97/10,436.04
  6. Step 6: Final answer
    x = 11,479.80

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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.