Home / 10,299.30-15,447.88-6,988.80

Finding the Fourth Proportional to 10,299.30, 15,447.88 and 6,988.80

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Solution

The fourth proportional to 10,299.30, 15,447.88 and 6,988.80 is: 10,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,299.30 : 15,447.88 = 6,988.80 : x
  2. Step 2: Convert to fraction form
    10,299.30/15,447.88 = 6,988.80/x
  3. Step 3: Cross multiply
    10,299.30x = 15,447.88 × 6,988.80
  4. Step 4: Simplify right side
    10,299.30x = 107,962,143.74
  5. Step 5: Solve for x
    x = 107,962,143.74/10,299.30
  6. Step 6: Final answer
    x = 10,482.48

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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.