Home / 18,947.61-28,422.17-7,100.15

Finding the Fourth Proportional to 18,947.61, 28,422.17 and 7,100.15

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Solution

The fourth proportional to 18,947.61, 28,422.17 and 7,100.15 is: 10,650.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.61 : 28,422.17 = 7,100.15 : x
  2. Step 2: Convert to fraction form
    18,947.61/28,422.17 = 7,100.15/x
  3. Step 3: Cross multiply
    18,947.61x = 28,422.17 × 7,100.15
  4. Step 4: Simplify right side
    18,947.61x = 201,801,492.71
  5. Step 5: Solve for x
    x = 201,801,492.71/18,947.61
  6. Step 6: Final answer
    x = 10,650.50

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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.