Home / 28,119.16-42,186.08-8,397.72

Finding the Fourth Proportional to 28,119.16, 42,186.08 and 8,397.72

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Solution

The fourth proportional to 28,119.16, 42,186.08 and 8,397.72 is: 12,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.16 : 42,186.08 = 8,397.72 : x
  2. Step 2: Convert to fraction form
    28,119.16/42,186.08 = 8,397.72/x
  3. Step 3: Cross multiply
    28,119.16x = 42,186.08 × 8,397.72
  4. Step 4: Simplify right side
    28,119.16x = 354,266,887.74
  5. Step 5: Solve for x
    x = 354,266,887.74/28,119.16
  6. Step 6: Final answer
    x = 12,598.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.