Home / 15,138.29-20,900.43-9,848.18

Finding the Fourth Proportional to 15,138.29, 20,900.43 and 9,848.18

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Solution

The fourth proportional to 15,138.29, 20,900.43 and 9,848.18 is: 13,596.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.29 : 20,900.43 = 9,848.18 : x
  2. Step 2: Convert to fraction form
    15,138.29/20,900.43 = 9,848.18/x
  3. Step 3: Cross multiply
    15,138.29x = 20,900.43 × 9,848.18
  4. Step 4: Simplify right side
    15,138.29x = 205,831,248.97
  5. Step 5: Solve for x
    x = 205,831,248.97/15,138.29
  6. Step 6: Final answer
    x = 13,596.73

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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.