Home / 20,117.31-27,774.48-12,959.67

Finding the Fourth Proportional to 20,117.31, 27,774.48 and 12,959.67

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Solution

The fourth proportional to 20,117.31, 27,774.48 and 12,959.67 is: 17,892.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.31 : 27,774.48 = 12,959.67 : x
  2. Step 2: Convert to fraction form
    20,117.31/27,774.48 = 12,959.67/x
  3. Step 3: Cross multiply
    20,117.31x = 27,774.48 × 12,959.67
  4. Step 4: Simplify right side
    20,117.31x = 359,948,095.22
  5. Step 5: Solve for x
    x = 359,948,095.22/20,117.31
  6. Step 6: Final answer
    x = 17,892.46

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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.