Home / 28,377.60-42,586.56-12,808.32

Finding the Fourth Proportional to 28,377.60, 42,586.56 and 12,808.32

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Solution

The fourth proportional to 28,377.60, 42,586.56 and 12,808.32 is: 19,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.60 : 42,586.56 = 12,808.32 : x
  2. Step 2: Convert to fraction form
    28,377.60/42,586.56 = 12,808.32/x
  3. Step 3: Cross multiply
    28,377.60x = 42,586.56 × 12,808.32
  4. Step 4: Simplify right side
    28,377.60x = 545,462,288.18
  5. Step 5: Solve for x
    x = 545,462,288.18/28,377.60
  6. Step 6: Final answer
    x = 19,221.58

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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.