Home / 31,079.12-42,897.48-19,144.40

Finding the Fourth Proportional to 31,079.12, 42,897.48 and 19,144.40

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Solution

The fourth proportional to 31,079.12, 42,897.48 and 19,144.40 is: 26,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,079.12 : 42,897.48 = 19,144.40 : x
  2. Step 2: Convert to fraction form
    31,079.12/42,897.48 = 19,144.40/x
  3. Step 3: Cross multiply
    31,079.12x = 42,897.48 × 19,144.40
  4. Step 4: Simplify right side
    31,079.12x = 821,246,516.11
  5. Step 5: Solve for x
    x = 821,246,516.11/31,079.12
  6. Step 6: Final answer
    x = 26,424.38

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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.