Home / 10,586.40-15,880.20-3,565.80

Finding the Fourth Proportional to 10,586.40, 15,880.20 and 3,565.80

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Solution

The fourth proportional to 10,586.40, 15,880.20 and 3,565.80 is: 5,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,586.40 : 15,880.20 = 3,565.80 : x
  2. Step 2: Convert to fraction form
    10,586.40/15,880.20 = 3,565.80/x
  3. Step 3: Cross multiply
    10,586.40x = 15,880.20 × 3,565.80
  4. Step 4: Simplify right side
    10,586.40x = 56,625,617.16
  5. Step 5: Solve for x
    x = 56,625,617.16/10,586.40
  6. Step 6: Final answer
    x = 5,348.90

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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.