Home / 15,291.75-21,105.18-9,002.91

Finding the Fourth Proportional to 15,291.75, 21,105.18 and 9,002.91

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Solution

The fourth proportional to 15,291.75, 21,105.18 and 9,002.91 is: 12,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.75 : 21,105.18 = 9,002.91 : x
  2. Step 2: Convert to fraction form
    15,291.75/21,105.18 = 9,002.91/x
  3. Step 3: Cross multiply
    15,291.75x = 21,105.18 × 9,002.91
  4. Step 4: Simplify right side
    15,291.75x = 190,008,036.07
  5. Step 5: Solve for x
    x = 190,008,036.07/15,291.75
  6. Step 6: Final answer
    x = 12,425.53

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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.