Home / 28,084.60-42,127.77-12,281.50

Finding the Fourth Proportional to 28,084.60, 42,127.77 and 12,281.50

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Solution

The fourth proportional to 28,084.60, 42,127.77 and 12,281.50 is: 18,422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.60 : 42,127.77 = 12,281.50 : x
  2. Step 2: Convert to fraction form
    28,084.60/42,127.77 = 12,281.50/x
  3. Step 3: Cross multiply
    28,084.60x = 42,127.77 × 12,281.50
  4. Step 4: Simplify right side
    28,084.60x = 517,392,219.59
  5. Step 5: Solve for x
    x = 517,392,219.59/28,084.60
  6. Step 6: Final answer
    x = 18,422.63

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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.