Home / 12,159.17-18,238.93-3,394.13

Finding the Fourth Proportional to 12,159.17, 18,238.93 and 3,394.13

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Solution

The fourth proportional to 12,159.17, 18,238.93 and 3,394.13 is: 5,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.17 : 18,238.93 = 3,394.13 : x
  2. Step 2: Convert to fraction form
    12,159.17/18,238.93 = 3,394.13/x
  3. Step 3: Cross multiply
    12,159.17x = 18,238.93 × 3,394.13
  4. Step 4: Simplify right side
    12,159.17x = 61,905,199.80
  5. Step 5: Solve for x
    x = 61,905,199.80/12,159.17
  6. Step 6: Final answer
    x = 5,091.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.