Home / 31,417.20-43,354.44-20,070.72

Finding the Fourth Proportional to 31,417.20, 43,354.44 and 20,070.72

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Solution

The fourth proportional to 31,417.20, 43,354.44 and 20,070.72 is: 27,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.20 : 43,354.44 = 20,070.72 : x
  2. Step 2: Convert to fraction form
    31,417.20/43,354.44 = 20,070.72/x
  3. Step 3: Cross multiply
    31,417.20x = 43,354.44 × 20,070.72
  4. Step 4: Simplify right side
    31,417.20x = 870,154,826.00
  5. Step 5: Solve for x
    x = 870,154,826.00/31,417.20
  6. Step 6: Final answer
    x = 27,696.77

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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.