Home / 31,309.76-43,215.64-19,366.16

Finding the Fourth Proportional to 31,309.76, 43,215.64 and 19,366.16

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Solution

The fourth proportional to 31,309.76, 43,215.64 and 19,366.16 is: 26,730.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,309.76 : 43,215.64 = 19,366.16 : x
  2. Step 2: Convert to fraction form
    31,309.76/43,215.64 = 19,366.16/x
  3. Step 3: Cross multiply
    31,309.76x = 43,215.64 × 19,366.16
  4. Step 4: Simplify right side
    31,309.76x = 836,920,734.25
  5. Step 5: Solve for x
    x = 836,920,734.25/31,309.76
  6. Step 6: Final answer
    x = 26,730.34

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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.