Home / 15,188.52-20,959.65-8,900.76

Finding the Fourth Proportional to 15,188.52, 20,959.65 and 8,900.76

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Solution

The fourth proportional to 15,188.52, 20,959.65 and 8,900.76 is: 12,282.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.52 : 20,959.65 = 8,900.76 : x
  2. Step 2: Convert to fraction form
    15,188.52/20,959.65 = 8,900.76/x
  3. Step 3: Cross multiply
    15,188.52x = 20,959.65 × 8,900.76
  4. Step 4: Simplify right side
    15,188.52x = 186,556,814.33
  5. Step 5: Solve for x
    x = 186,556,814.33/15,188.52
  6. Step 6: Final answer
    x = 12,282.75

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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.