Home / 21,332.14-31,984.50-8,860.76

Finding the Fourth Proportional to 21,332.14, 31,984.50 and 8,860.76

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Solution

The fourth proportional to 21,332.14, 31,984.50 and 8,860.76 is: 13,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.14 : 31,984.50 = 8,860.76 : x
  2. Step 2: Convert to fraction form
    21,332.14/31,984.50 = 8,860.76/x
  3. Step 3: Cross multiply
    21,332.14x = 31,984.50 × 8,860.76
  4. Step 4: Simplify right side
    21,332.14x = 283,406,978.22
  5. Step 5: Solve for x
    x = 283,406,978.22/21,332.14
  6. Step 6: Final answer
    x = 13,285.45

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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.