Home / 31,363.32-43,289.67-19,419.87

Finding the Fourth Proportional to 31,363.32, 43,289.67 and 19,419.87

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Solution

The fourth proportional to 31,363.32, 43,289.67 and 19,419.87 is: 26,804.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,363.32 : 43,289.67 = 19,419.87 : x
  2. Step 2: Convert to fraction form
    31,363.32/43,289.67 = 19,419.87/x
  3. Step 3: Cross multiply
    31,363.32x = 43,289.67 × 19,419.87
  4. Step 4: Simplify right side
    31,363.32x = 840,679,763.74
  5. Step 5: Solve for x
    x = 840,679,763.74/31,363.32
  6. Step 6: Final answer
    x = 26,804.55

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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.