Home / 18,947.20-28,280.48-17,779.84

Finding the Fourth Proportional to 18,947.20, 28,280.48 and 17,779.84

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Solution

The fourth proportional to 18,947.20, 28,280.48 and 17,779.84 is: 26,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.20 : 28,280.48 = 17,779.84 : x
  2. Step 2: Convert to fraction form
    18,947.20/28,280.48 = 17,779.84/x
  3. Step 3: Cross multiply
    18,947.20x = 28,280.48 × 17,779.84
  4. Step 4: Simplify right side
    18,947.20x = 502,822,409.52
  5. Step 5: Solve for x
    x = 502,822,409.52/18,947.20
  6. Step 6: Final answer
    x = 26,538.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.