Home / 15,439.00-21,305.53-8,724.48

Finding the Fourth Proportional to 15,439.00, 21,305.53 and 8,724.48

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Solution

The fourth proportional to 15,439.00, 21,305.53 and 8,724.48 is: 12,039.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.00 : 21,305.53 = 8,724.48 : x
  2. Step 2: Convert to fraction form
    15,439.00/21,305.53 = 8,724.48/x
  3. Step 3: Cross multiply
    15,439.00x = 21,305.53 × 8,724.48
  4. Step 4: Simplify right side
    15,439.00x = 185,879,681.28
  5. Step 5: Solve for x
    x = 185,879,681.28/15,439.00
  6. Step 6: Final answer
    x = 12,039.62

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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.