Home / 31,688.04-43,724.18-18,946.38

Finding the Fourth Proportional to 31,688.04, 43,724.18 and 18,946.38

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Solution

The fourth proportional to 31,688.04, 43,724.18 and 18,946.38 is: 26,142.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.04 : 43,724.18 = 18,946.38 : x
  2. Step 2: Convert to fraction form
    31,688.04/43,724.18 = 18,946.38/x
  3. Step 3: Cross multiply
    31,688.04x = 43,724.18 × 18,946.38
  4. Step 4: Simplify right side
    31,688.04x = 828,414,834.74
  5. Step 5: Solve for x
    x = 828,414,834.74/31,688.04
  6. Step 6: Final answer
    x = 26,142.82

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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.