Home / 31,687.04-43,710.60-20,358.23

Finding the Fourth Proportional to 31,687.04, 43,710.60 and 20,358.23

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Solution

The fourth proportional to 31,687.04, 43,710.60 and 20,358.23 is: 28,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.04 : 43,710.60 = 20,358.23 : x
  2. Step 2: Convert to fraction form
    31,687.04/43,710.60 = 20,358.23/x
  3. Step 3: Cross multiply
    31,687.04x = 43,710.60 × 20,358.23
  4. Step 4: Simplify right side
    31,687.04x = 889,870,448.24
  5. Step 5: Solve for x
    x = 889,870,448.24/31,687.04
  6. Step 6: Final answer
    x = 28,083.10

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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.