Home / 15,678.18-23,517.28-5,289.94

Finding the Fourth Proportional to 15,678.18, 23,517.28 and 5,289.94

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Solution

The fourth proportional to 15,678.18, 23,517.28 and 5,289.94 is: 7,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.18 : 23,517.28 = 5,289.94 : x
  2. Step 2: Convert to fraction form
    15,678.18/23,517.28 = 5,289.94/x
  3. Step 3: Cross multiply
    15,678.18x = 23,517.28 × 5,289.94
  4. Step 4: Simplify right side
    15,678.18x = 124,405,000.16
  5. Step 5: Solve for x
    x = 124,405,000.16/15,678.18
  6. Step 6: Final answer
    x = 7,934.91

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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.