Home / 10,708.28-14,783.88-6,988.76

Finding the Fourth Proportional to 10,708.28, 14,783.88 and 6,988.76

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Solution

The fourth proportional to 10,708.28, 14,783.88 and 6,988.76 is: 9,648.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,708.28 : 14,783.88 = 6,988.76 : x
  2. Step 2: Convert to fraction form
    10,708.28/14,783.88 = 6,988.76/x
  3. Step 3: Cross multiply
    10,708.28x = 14,783.88 × 6,988.76
  4. Step 4: Simplify right side
    10,708.28x = 103,320,989.19
  5. Step 5: Solve for x
    x = 103,320,989.19/10,708.28
  6. Step 6: Final answer
    x = 9,648.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.