Home / 20,898.74-28,842.32-11,947.53

Finding the Fourth Proportional to 20,898.74, 28,842.32 and 11,947.53

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Solution

The fourth proportional to 20,898.74, 28,842.32 and 11,947.53 is: 16,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.74 : 28,842.32 = 11,947.53 : x
  2. Step 2: Convert to fraction form
    20,898.74/28,842.32 = 11,947.53/x
  3. Step 3: Cross multiply
    20,898.74x = 28,842.32 × 11,947.53
  4. Step 4: Simplify right side
    20,898.74x = 344,594,513.34
  5. Step 5: Solve for x
    x = 344,594,513.34/20,898.74
  6. Step 6: Final answer
    x = 16,488.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.