Home / 31,442.86-43,372.16-19,345.40

Finding the Fourth Proportional to 31,442.86, 43,372.16 and 19,345.40

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Solution

The fourth proportional to 31,442.86, 43,372.16 and 19,345.40 is: 26,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.86 : 43,372.16 = 19,345.40 : x
  2. Step 2: Convert to fraction form
    31,442.86/43,372.16 = 19,345.40/x
  3. Step 3: Cross multiply
    31,442.86x = 43,372.16 × 19,345.40
  4. Step 4: Simplify right side
    31,442.86x = 839,051,784.06
  5. Step 5: Solve for x
    x = 839,051,784.06/31,442.86
  6. Step 6: Final answer
    x = 26,684.97

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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.