Home / 19,161.72-28,700.76-9,280.08

Finding the Fourth Proportional to 19,161.72, 28,700.76 and 9,280.08

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Solution

The fourth proportional to 19,161.72, 28,700.76 and 9,280.08 is: 13,899.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.72 : 28,700.76 = 9,280.08 : x
  2. Step 2: Convert to fraction form
    19,161.72/28,700.76 = 9,280.08/x
  3. Step 3: Cross multiply
    19,161.72x = 28,700.76 × 9,280.08
  4. Step 4: Simplify right side
    19,161.72x = 266,345,348.86
  5. Step 5: Solve for x
    x = 266,345,348.86/19,161.72
  6. Step 6: Final answer
    x = 13,899.87

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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.