Home / 28,450.86-39,253.05-15,873.18

Finding the Fourth Proportional to 28,450.86, 39,253.05 and 15,873.18

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Solution

The fourth proportional to 28,450.86, 39,253.05 and 15,873.18 is: 21,899.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.86 : 39,253.05 = 15,873.18 : x
  2. Step 2: Convert to fraction form
    28,450.86/39,253.05 = 15,873.18/x
  3. Step 3: Cross multiply
    28,450.86x = 39,253.05 × 15,873.18
  4. Step 4: Simplify right side
    28,450.86x = 623,070,728.20
  5. Step 5: Solve for x
    x = 623,070,728.20/28,450.86
  6. Step 6: Final answer
    x = 21,899.89

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Double scale
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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.