Home / 15,424.26-21,287.65-8,712.58

Finding the Fourth Proportional to 15,424.26, 21,287.65 and 8,712.58

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Solution

The fourth proportional to 15,424.26, 21,287.65 and 8,712.58 is: 12,024.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.26 : 21,287.65 = 8,712.58 : x
  2. Step 2: Convert to fraction form
    15,424.26/21,287.65 = 8,712.58/x
  3. Step 3: Cross multiply
    15,424.26x = 21,287.65 × 8,712.58
  4. Step 4: Simplify right side
    15,424.26x = 185,470,353.64
  5. Step 5: Solve for x
    x = 185,470,353.64/15,424.26
  6. Step 6: Final answer
    x = 12,024.59

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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.