Home / 15,499.05-21,385.16-8,783.13

Finding the Fourth Proportional to 15,499.05, 21,385.16 and 8,783.13

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Solution

The fourth proportional to 15,499.05, 21,385.16 and 8,783.13 is: 12,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.05 : 21,385.16 = 8,783.13 : x
  2. Step 2: Convert to fraction form
    15,499.05/21,385.16 = 8,783.13/x
  3. Step 3: Cross multiply
    15,499.05x = 21,385.16 × 8,783.13
  4. Step 4: Simplify right side
    15,499.05x = 187,828,758.97
  5. Step 5: Solve for x
    x = 187,828,758.97/15,499.05
  6. Step 6: Final answer
    x = 12,118.73

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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.