Home / 28,440.02-42,641.80-11,811.53

Finding the Fourth Proportional to 28,440.02, 42,641.80 and 11,811.53

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Solution

The fourth proportional to 28,440.02, 42,641.80 and 11,811.53 is: 17,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.02 : 42,641.80 = 11,811.53 : x
  2. Step 2: Convert to fraction form
    28,440.02/42,641.80 = 11,811.53/x
  3. Step 3: Cross multiply
    28,440.02x = 42,641.80 × 11,811.53
  4. Step 4: Simplify right side
    28,440.02x = 503,664,876.18
  5. Step 5: Solve for x
    x = 503,664,876.18/28,440.02
  6. Step 6: Final answer
    x = 17,709.72

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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.