Home / 10,881.36-16,289.28-6,988.68

Finding the Fourth Proportional to 10,881.36, 16,289.28 and 6,988.68

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Solution

The fourth proportional to 10,881.36, 16,289.28 and 6,988.68 is: 10,461.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.36 : 16,289.28 = 6,988.68 : x
  2. Step 2: Convert to fraction form
    10,881.36/16,289.28 = 6,988.68/x
  3. Step 3: Cross multiply
    10,881.36x = 16,289.28 × 6,988.68
  4. Step 4: Simplify right side
    10,881.36x = 113,840,565.35
  5. Step 5: Solve for x
    x = 113,840,565.35/10,881.36
  6. Step 6: Final answer
    x = 10,461.98

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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.