Home / 15,199.17-20,975.00-8,739.78

Finding the Fourth Proportional to 15,199.17, 20,975.00 and 8,739.78

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Solution

The fourth proportional to 15,199.17, 20,975.00 and 8,739.78 is: 12,060.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,199.17 : 20,975.00 = 8,739.78 : x
  2. Step 2: Convert to fraction form
    15,199.17/20,975.00 = 8,739.78/x
  3. Step 3: Cross multiply
    15,199.17x = 20,975.00 × 8,739.78
  4. Step 4: Simplify right side
    15,199.17x = 183,316,841.80
  5. Step 5: Solve for x
    x = 183,316,841.80/15,199.17
  6. Step 6: Final answer
    x = 12,060.98

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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.