Home / 15,152.08-20,910-8,868.28

Finding the Fourth Proportional to 15,152.08, 20,910 and 8,868.28

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Solution

The fourth proportional to 15,152.08, 20,910 and 8,868.28 is: 12,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.08 : 20,910 = 8,868.28 : x
  2. Step 2: Convert to fraction form
    15,152.08/20,910 = 8,868.28/x
  3. Step 3: Cross multiply
    15,152.08x = 20,910 × 8,868.28
  4. Step 4: Simplify right side
    15,152.08x = 185,435,734.80
  5. Step 5: Solve for x
    x = 185,435,734.80/15,152.08
  6. Step 6: Final answer
    x = 12,238.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.