Home / 10,210.20-15,315.30-9,043.80

Finding the Fourth Proportional to 10,210.20, 15,315.30 and 9,043.80

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Solution

The fourth proportional to 10,210.20, 15,315.30 and 9,043.80 is: 13,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,210.20 : 15,315.30 = 9,043.80 : x
  2. Step 2: Convert to fraction form
    10,210.20/15,315.30 = 9,043.80/x
  3. Step 3: Cross multiply
    10,210.20x = 15,315.30 × 9,043.80
  4. Step 4: Simplify right side
    10,210.20x = 138,508,510.14
  5. Step 5: Solve for x
    x = 138,508,510.14/10,210.20
  6. Step 6: Final answer
    x = 13,565.70

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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.