Home / 31,434.24-43,387.47-19,490.79

Finding the Fourth Proportional to 31,434.24, 43,387.47 and 19,490.79

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Solution

The fourth proportional to 31,434.24, 43,387.47 and 19,490.79 is: 26,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,434.24 : 43,387.47 = 19,490.79 : x
  2. Step 2: Convert to fraction form
    31,434.24/43,387.47 = 19,490.79/x
  3. Step 3: Cross multiply
    31,434.24x = 43,387.47 × 19,490.79
  4. Step 4: Simplify right side
    31,434.24x = 845,656,066.40
  5. Step 5: Solve for x
    x = 845,656,066.40/31,434.24
  6. Step 6: Final answer
    x = 26,902.39

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Double scale
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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.