Home / 31,585.80-47,346.30-18,431.40

Finding the Fourth Proportional to 31,585.80, 47,346.30 and 18,431.40

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Solution

The fourth proportional to 31,585.80, 47,346.30 and 18,431.40 is: 27,628.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,585.80 : 47,346.30 = 18,431.40 : x
  2. Step 2: Convert to fraction form
    31,585.80/47,346.30 = 18,431.40/x
  3. Step 3: Cross multiply
    31,585.80x = 47,346.30 × 18,431.40
  4. Step 4: Simplify right side
    31,585.80x = 872,658,593.82
  5. Step 5: Solve for x
    x = 872,658,593.82/31,585.80
  6. Step 6: Final answer
    x = 27,628.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.