Home / 38,856.80-58,284.56-13,890.08

Finding the Fourth Proportional to 38,856.80, 58,284.56 and 13,890.08

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Solution

The fourth proportional to 38,856.80, 58,284.56 and 13,890.08 is: 20,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,856.80 : 58,284.56 = 13,890.08 : x
  2. Step 2: Convert to fraction form
    38,856.80/58,284.56 = 13,890.08/x
  3. Step 3: Cross multiply
    38,856.80x = 58,284.56 × 13,890.08
  4. Step 4: Simplify right side
    38,856.80x = 809,577,201.16
  5. Step 5: Solve for x
    x = 809,577,201.16/38,856.80
  6. Step 6: Final answer
    x = 20,834.89

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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.