Home / 42,581.48-63,844.40-20,394.14

Finding the Fourth Proportional to 42,581.48, 63,844.40 and 20,394.14

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Solution

The fourth proportional to 42,581.48, 63,844.40 and 20,394.14 is: 30,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,581.48 : 63,844.40 = 20,394.14 : x
  2. Step 2: Convert to fraction form
    42,581.48/63,844.40 = 20,394.14/x
  3. Step 3: Cross multiply
    42,581.48x = 63,844.40 × 20,394.14
  4. Step 4: Simplify right side
    42,581.48x = 1,302,051,631.82
  5. Step 5: Solve for x
    x = 1,302,051,631.82/42,581.48
  6. Step 6: Final answer
    x = 30,577.89

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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.