Home / 15,439.24-21,303.84-8,724.48

Finding the Fourth Proportional to 15,439.24, 21,303.84 and 8,724.48

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Solution

The fourth proportional to 15,439.24, 21,303.84 and 8,724.48 is: 12,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.24 : 21,303.84 = 8,724.48 : x
  2. Step 2: Convert to fraction form
    15,439.24/21,303.84 = 8,724.48/x
  3. Step 3: Cross multiply
    15,439.24x = 21,303.84 × 8,724.48
  4. Step 4: Simplify right side
    15,439.24x = 185,864,926.00
  5. Step 5: Solve for x
    x = 185,864,926.00/15,439.24
  6. Step 6: Final answer
    x = 12,038.48

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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.