Home / 10,681.85-16,032.56-5,420.59

Finding the Fourth Proportional to 10,681.85, 16,032.56 and 5,420.59

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Solution

The fourth proportional to 10,681.85, 16,032.56 and 5,420.59 is: 8,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.85 : 16,032.56 = 5,420.59 : x
  2. Step 2: Convert to fraction form
    10,681.85/16,032.56 = 5,420.59/x
  3. Step 3: Cross multiply
    10,681.85x = 16,032.56 × 5,420.59
  4. Step 4: Simplify right side
    10,681.85x = 86,905,934.41
  5. Step 5: Solve for x
    x = 86,905,934.41/10,681.85
  6. Step 6: Final answer
    x = 8,135.85

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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.