Home / 31,500.16-43,461.20-18,742.68

Finding the Fourth Proportional to 31,500.16, 43,461.20 and 18,742.68

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Solution

The fourth proportional to 31,500.16, 43,461.20 and 18,742.68 is: 25,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.16 : 43,461.20 = 18,742.68 : x
  2. Step 2: Convert to fraction form
    31,500.16/43,461.20 = 18,742.68/x
  3. Step 3: Cross multiply
    31,500.16x = 43,461.20 × 18,742.68
  4. Step 4: Simplify right side
    31,500.16x = 814,579,364.02
  5. Step 5: Solve for x
    x = 814,579,364.02/31,500.16
  6. Step 6: Final answer
    x = 25,859.53

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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.