Home / 28,130.96-42,212.28-19,372.88

Finding the Fourth Proportional to 28,130.96, 42,212.28 and 19,372.88

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Solution

The fourth proportional to 28,130.96, 42,212.28 and 19,372.88 is: 29,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.96 : 42,212.28 = 19,372.88 : x
  2. Step 2: Convert to fraction form
    28,130.96/42,212.28 = 19,372.88/x
  3. Step 3: Cross multiply
    28,130.96x = 42,212.28 × 19,372.88
  4. Step 4: Simplify right side
    28,130.96x = 817,773,434.97
  5. Step 5: Solve for x
    x = 817,773,434.97/28,130.96
  6. Step 6: Final answer
    x = 29,070.23

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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.