Home / 15,427.35-21,289.76-8,712.99

Finding the Fourth Proportional to 15,427.35, 21,289.76 and 8,712.99

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Solution

The fourth proportional to 15,427.35, 21,289.76 and 8,712.99 is: 12,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.35 : 21,289.76 = 8,712.99 : x
  2. Step 2: Convert to fraction form
    15,427.35/21,289.76 = 8,712.99/x
  3. Step 3: Cross multiply
    15,427.35x = 21,289.76 × 8,712.99
  4. Step 4: Simplify right side
    15,427.35x = 185,497,422.42
  5. Step 5: Solve for x
    x = 185,497,422.42/15,427.35
  6. Step 6: Final answer
    x = 12,023.93

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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.