Home / 28,430.55-42,575.74-17,874.38

Finding the Fourth Proportional to 28,430.55, 42,575.74 and 17,874.38

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Solution

The fourth proportional to 28,430.55, 42,575.74 and 17,874.38 is: 26,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.55 : 42,575.74 = 17,874.38 : x
  2. Step 2: Convert to fraction form
    28,430.55/42,575.74 = 17,874.38/x
  3. Step 3: Cross multiply
    28,430.55x = 42,575.74 × 17,874.38
  4. Step 4: Simplify right side
    28,430.55x = 761,015,031.10
  5. Step 5: Solve for x
    x = 761,015,031.10/28,430.55
  6. Step 6: Final answer
    x = 26,767.51

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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.