Home / 42,590.09-63,899.26-18,894.40

Finding the Fourth Proportional to 42,590.09, 63,899.26 and 18,894.40

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Solution

The fourth proportional to 42,590.09, 63,899.26 and 18,894.40 is: 28,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,590.09 : 63,899.26 = 18,894.40 : x
  2. Step 2: Convert to fraction form
    42,590.09/63,899.26 = 18,894.40/x
  3. Step 3: Cross multiply
    42,590.09x = 63,899.26 × 18,894.40
  4. Step 4: Simplify right side
    42,590.09x = 1,207,338,178.14
  5. Step 5: Solve for x
    x = 1,207,338,178.14/42,590.09
  6. Step 6: Final answer
    x = 28,347.87

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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.