Home / 15,347.79-21,180.56-8,633.70

Finding the Fourth Proportional to 15,347.79, 21,180.56 and 8,633.70

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Solution

The fourth proportional to 15,347.79, 21,180.56 and 8,633.70 is: 11,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.79 : 21,180.56 = 8,633.70 : x
  2. Step 2: Convert to fraction form
    15,347.79/21,180.56 = 8,633.70/x
  3. Step 3: Cross multiply
    15,347.79x = 21,180.56 × 8,633.70
  4. Step 4: Simplify right side
    15,347.79x = 182,866,557.70
  5. Step 5: Solve for x
    x = 182,866,557.70/15,347.79
  6. Step 6: Final answer
    x = 11,914.85

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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.