Home / 31,152.74-43,037.67-20,423.10

Finding the Fourth Proportional to 31,152.74, 43,037.67 and 20,423.10

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Solution

The fourth proportional to 31,152.74, 43,037.67 and 20,423.10 is: 28,214.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,152.74 : 43,037.67 = 20,423.10 : x
  2. Step 2: Convert to fraction form
    31,152.74/43,037.67 = 20,423.10/x
  3. Step 3: Cross multiply
    31,152.74x = 43,037.67 × 20,423.10
  4. Step 4: Simplify right side
    31,152.74x = 878,962,638.18
  5. Step 5: Solve for x
    x = 878,962,638.18/31,152.74
  6. Step 6: Final answer
    x = 28,214.62

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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.