Home / 18,870.32-28,293.10-10,551.21

Finding the Fourth Proportional to 18,870.32, 28,293.10 and 10,551.21

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Solution

The fourth proportional to 18,870.32, 28,293.10 and 10,551.21 is: 15,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.32 : 28,293.10 = 10,551.21 : x
  2. Step 2: Convert to fraction form
    18,870.32/28,293.10 = 10,551.21/x
  3. Step 3: Cross multiply
    18,870.32x = 28,293.10 × 10,551.21
  4. Step 4: Simplify right side
    18,870.32x = 298,526,466.32
  5. Step 5: Solve for x
    x = 298,526,466.32/18,870.32
  6. Step 6: Final answer
    x = 15,819.90

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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.