Home / 10,931.90-16,392.02-4,270.66

Finding the Fourth Proportional to 10,931.90, 16,392.02 and 4,270.66

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Solution

The fourth proportional to 10,931.90, 16,392.02 and 4,270.66 is: 6,403.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.90 : 16,392.02 = 4,270.66 : x
  2. Step 2: Convert to fraction form
    10,931.90/16,392.02 = 4,270.66/x
  3. Step 3: Cross multiply
    10,931.90x = 16,392.02 × 4,270.66
  4. Step 4: Simplify right side
    10,931.90x = 70,004,681.80
  5. Step 5: Solve for x
    x = 70,004,681.80/10,931.90
  6. Step 6: Final answer
    x = 6,403.71

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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.