Home / 13,044.51-18,126.30-12,909.04

Finding the Fourth Proportional to 13,044.51, 18,126.30 and 12,909.04

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Solution

The fourth proportional to 13,044.51, 18,126.30 and 12,909.04 is: 17,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,044.51 : 18,126.30 = 12,909.04 : x
  2. Step 2: Convert to fraction form
    13,044.51/18,126.30 = 12,909.04/x
  3. Step 3: Cross multiply
    13,044.51x = 18,126.30 × 12,909.04
  4. Step 4: Simplify right side
    13,044.51x = 233,993,062.23
  5. Step 5: Solve for x
    x = 233,993,062.23/13,044.51
  6. Step 6: Final answer
    x = 17,938.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.