Home / 15,690.40-23,480.04-11,520.52

Finding the Fourth Proportional to 15,690.40, 23,480.04 and 11,520.52

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Solution

The fourth proportional to 15,690.40, 23,480.04 and 11,520.52 is: 17,239.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.40 : 23,480.04 = 11,520.52 : x
  2. Step 2: Convert to fraction form
    15,690.40/23,480.04 = 11,520.52/x
  3. Step 3: Cross multiply
    15,690.40x = 23,480.04 × 11,520.52
  4. Step 4: Simplify right side
    15,690.40x = 270,502,270.42
  5. Step 5: Solve for x
    x = 270,502,270.42/15,690.40
  6. Step 6: Final answer
    x = 17,239.99

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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.