Home / 15,424.12-21,285.28-8,709.42

Finding the Fourth Proportional to 15,424.12, 21,285.28 and 8,709.42

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Solution

The fourth proportional to 15,424.12, 21,285.28 and 8,709.42 is: 12,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.12 : 21,285.28 = 8,709.42 : x
  2. Step 2: Convert to fraction form
    15,424.12/21,285.28 = 8,709.42/x
  3. Step 3: Cross multiply
    15,424.12x = 21,285.28 × 8,709.42
  4. Step 4: Simplify right side
    15,424.12x = 185,382,534.04
  5. Step 5: Solve for x
    x = 185,382,534.04/15,424.12
  6. Step 6: Final answer
    x = 12,019.00

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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.