Home / 15,498.68-21,387.74-8,784.93

Finding the Fourth Proportional to 15,498.68, 21,387.74 and 8,784.93

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Solution

The fourth proportional to 15,498.68, 21,387.74 and 8,784.93 is: 12,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.68 : 21,387.74 = 8,784.93 : x
  2. Step 2: Convert to fraction form
    15,498.68/21,387.74 = 8,784.93/x
  3. Step 3: Cross multiply
    15,498.68x = 21,387.74 × 8,784.93
  4. Step 4: Simplify right side
    15,498.68x = 187,889,754.83
  5. Step 5: Solve for x
    x = 187,889,754.83/15,498.68
  6. Step 6: Final answer
    x = 12,122.95

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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.