Home / 15,424.48-21,285.68-8,710

Finding the Fourth Proportional to 15,424.48, 21,285.68 and 8,710

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Solution

The fourth proportional to 15,424.48, 21,285.68 and 8,710 is: 12,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.48 : 21,285.68 = 8,710 : x
  2. Step 2: Convert to fraction form
    15,424.48/21,285.68 = 8,710/x
  3. Step 3: Cross multiply
    15,424.48x = 21,285.68 × 8,710
  4. Step 4: Simplify right side
    15,424.48x = 185,398,272.80
  5. Step 5: Solve for x
    x = 185,398,272.80/15,424.48
  6. Step 6: Final answer
    x = 12,019.74

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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.