Home / 28,496.16-39,288.72-18,407.52

Finding the Fourth Proportional to 28,496.16, 39,288.72 and 18,407.52

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Solution

The fourth proportional to 28,496.16, 39,288.72 and 18,407.52 is: 25,379.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,496.16 : 39,288.72 = 18,407.52 : x
  2. Step 2: Convert to fraction form
    28,496.16/39,288.72 = 18,407.52/x
  3. Step 3: Cross multiply
    28,496.16x = 39,288.72 × 18,407.52
  4. Step 4: Simplify right side
    28,496.16x = 723,207,899.17
  5. Step 5: Solve for x
    x = 723,207,899.17/28,496.16
  6. Step 6: Final answer
    x = 25,379.14

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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.