Home / 31,354.39-43,289.32-19,430.38

Finding the Fourth Proportional to 31,354.39, 43,289.32 and 19,430.38

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Solution

The fourth proportional to 31,354.39, 43,289.32 and 19,430.38 is: 26,826.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.39 : 43,289.32 = 19,430.38 : x
  2. Step 2: Convert to fraction form
    31,354.39/43,289.32 = 19,430.38/x
  3. Step 3: Cross multiply
    31,354.39x = 43,289.32 × 19,430.38
  4. Step 4: Simplify right side
    31,354.39x = 841,127,721.10
  5. Step 5: Solve for x
    x = 841,127,721.10/31,354.39
  6. Step 6: Final answer
    x = 26,826.48

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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.