Home / 28,430.01-42,609.38-21,880.89

Finding the Fourth Proportional to 28,430.01, 42,609.38 and 21,880.89

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Solution

The fourth proportional to 28,430.01, 42,609.38 and 21,880.89 is: 32,793.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.01 : 42,609.38 = 21,880.89 : x
  2. Step 2: Convert to fraction form
    28,430.01/42,609.38 = 21,880.89/x
  3. Step 3: Cross multiply
    28,430.01x = 42,609.38 × 21,880.89
  4. Step 4: Simplify right side
    28,430.01x = 932,331,047.34
  5. Step 5: Solve for x
    x = 932,331,047.34/28,430.01
  6. Step 6: Final answer
    x = 32,793.91

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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.