Home / 10,865.40-16,298.10-4,288.20

Finding the Fourth Proportional to 10,865.40, 16,298.10 and 4,288.20

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Solution

The fourth proportional to 10,865.40, 16,298.10 and 4,288.20 is: 6,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.40 : 16,298.10 = 4,288.20 : x
  2. Step 2: Convert to fraction form
    10,865.40/16,298.10 = 4,288.20/x
  3. Step 3: Cross multiply
    10,865.40x = 16,298.10 × 4,288.20
  4. Step 4: Simplify right side
    10,865.40x = 69,889,512.42
  5. Step 5: Solve for x
    x = 69,889,512.42/10,865.40
  6. Step 6: Final answer
    x = 6,432.30

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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.