Home / 31,084.63-42,896.18-19,147.66

Finding the Fourth Proportional to 31,084.63, 42,896.18 and 19,147.66

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Solution

The fourth proportional to 31,084.63, 42,896.18 and 19,147.66 is: 26,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,084.63 : 42,896.18 = 19,147.66 : x
  2. Step 2: Convert to fraction form
    31,084.63/42,896.18 = 19,147.66/x
  3. Step 3: Cross multiply
    31,084.63x = 42,896.18 × 19,147.66
  4. Step 4: Simplify right side
    31,084.63x = 821,361,410.57
  5. Step 5: Solve for x
    x = 821,361,410.57/31,084.63
  6. Step 6: Final answer
    x = 26,423.40

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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.