Home / 31,412.72-43,345.36-19,471.70

Finding the Fourth Proportional to 31,412.72, 43,345.36 and 19,471.70

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Solution

The fourth proportional to 31,412.72, 43,345.36 and 19,471.70 is: 26,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,412.72 : 43,345.36 = 19,471.70 : x
  2. Step 2: Convert to fraction form
    31,412.72/43,345.36 = 19,471.70/x
  3. Step 3: Cross multiply
    31,412.72x = 43,345.36 × 19,471.70
  4. Step 4: Simplify right side
    31,412.72x = 844,007,846.31
  5. Step 5: Solve for x
    x = 844,007,846.31/31,412.72
  6. Step 6: Final answer
    x = 26,868.35

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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.