Home / 31,029.02-42,770.25-20,954.24

Finding the Fourth Proportional to 31,029.02, 42,770.25 and 20,954.24

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Solution

The fourth proportional to 31,029.02, 42,770.25 and 20,954.24 is: 28,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,029.02 : 42,770.25 = 20,954.24 : x
  2. Step 2: Convert to fraction form
    31,029.02/42,770.25 = 20,954.24/x
  3. Step 3: Cross multiply
    31,029.02x = 42,770.25 × 20,954.24
  4. Step 4: Simplify right side
    31,029.02x = 896,217,869.51
  5. Step 5: Solve for x
    x = 896,217,869.51/31,029.02
  6. Step 6: Final answer
    x = 28,883.22

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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.