Home / 31,062.99-42,861.22-18,320.19

Finding the Fourth Proportional to 31,062.99, 42,861.22 and 18,320.19

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Solution

The fourth proportional to 31,062.99, 42,861.22 and 18,320.19 is: 25,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,062.99 : 42,861.22 = 18,320.19 : x
  2. Step 2: Convert to fraction form
    31,062.99/42,861.22 = 18,320.19/x
  3. Step 3: Cross multiply
    31,062.99x = 42,861.22 × 18,320.19
  4. Step 4: Simplify right side
    31,062.99x = 785,225,694.03
  5. Step 5: Solve for x
    x = 785,225,694.03/31,062.99
  6. Step 6: Final answer
    x = 25,278.50

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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.