Home / 28,875.72-43,319.70-9,151.68

Finding the Fourth Proportional to 28,875.72, 43,319.70 and 9,151.68

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Solution

The fourth proportional to 28,875.72, 43,319.70 and 9,151.68 is: 13,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.72 : 43,319.70 = 9,151.68 : x
  2. Step 2: Convert to fraction form
    28,875.72/43,319.70 = 9,151.68/x
  3. Step 3: Cross multiply
    28,875.72x = 43,319.70 × 9,151.68
  4. Step 4: Simplify right side
    28,875.72x = 396,448,032.10
  5. Step 5: Solve for x
    x = 396,448,032.10/28,875.72
  6. Step 6: Final answer
    x = 13,729.46

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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.