Home / 15,498.04-21,387.76-8,783.68

Finding the Fourth Proportional to 15,498.04, 21,387.76 and 8,783.68

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Solution

The fourth proportional to 15,498.04, 21,387.76 and 8,783.68 is: 12,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.04 : 21,387.76 = 8,783.68 : x
  2. Step 2: Convert to fraction form
    15,498.04/21,387.76 = 8,783.68/x
  3. Step 3: Cross multiply
    15,498.04x = 21,387.76 × 8,783.68
  4. Step 4: Simplify right side
    15,498.04x = 187,863,239.76
  5. Step 5: Solve for x
    x = 187,863,239.76/15,498.04
  6. Step 6: Final answer
    x = 12,121.74

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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.