Home / 10,506.20-15,740.10-8,547.80

Finding the Fourth Proportional to 10,506.20, 15,740.10 and 8,547.80

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Solution

The fourth proportional to 10,506.20, 15,740.10 and 8,547.80 is: 12,806.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,506.20 : 15,740.10 = 8,547.80 : x
  2. Step 2: Convert to fraction form
    10,506.20/15,740.10 = 8,547.80/x
  3. Step 3: Cross multiply
    10,506.20x = 15,740.10 × 8,547.80
  4. Step 4: Simplify right side
    10,506.20x = 134,543,226.78
  5. Step 5: Solve for x
    x = 134,543,226.78/10,506.20
  6. Step 6: Final answer
    x = 12,806.08

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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.