Home / 31,545.40-43,518.42-18,113.32

Finding the Fourth Proportional to 31,545.40, 43,518.42 and 18,113.32

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Solution

The fourth proportional to 31,545.40, 43,518.42 and 18,113.32 is: 24,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,545.40 : 43,518.42 = 18,113.32 : x
  2. Step 2: Convert to fraction form
    31,545.40/43,518.42 = 18,113.32/x
  3. Step 3: Cross multiply
    31,545.40x = 43,518.42 × 18,113.32
  4. Step 4: Simplify right side
    31,545.40x = 788,263,067.35
  5. Step 5: Solve for x
    x = 788,263,067.35/31,545.40
  6. Step 6: Final answer
    x = 24,988.21

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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.