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Finding the Fourth Proportional to 15,607.80, 23,395.14 and 7,278.12

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Solution

The fourth proportional to 15,607.80, 23,395.14 and 7,278.12 is: 10,909.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.80 : 23,395.14 = 7,278.12 : x
  2. Step 2: Convert to fraction form
    15,607.80/23,395.14 = 7,278.12/x
  3. Step 3: Cross multiply
    15,607.80x = 23,395.14 × 7,278.12
  4. Step 4: Simplify right side
    15,607.80x = 170,272,636.34
  5. Step 5: Solve for x
    x = 170,272,636.34/15,607.80
  6. Step 6: Final answer
    x = 10,909.46

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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.