Home / 28,133.55-38,871.09-22,210.56

Finding the Fourth Proportional to 28,133.55, 38,871.09 and 22,210.56

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Solution

The fourth proportional to 28,133.55, 38,871.09 and 22,210.56 is: 30,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.55 : 38,871.09 = 22,210.56 : x
  2. Step 2: Convert to fraction form
    28,133.55/38,871.09 = 22,210.56/x
  3. Step 3: Cross multiply
    28,133.55x = 38,871.09 × 22,210.56
  4. Step 4: Simplify right side
    28,133.55x = 863,348,676.71
  5. Step 5: Solve for x
    x = 863,348,676.71/28,133.55
  6. Step 6: Final answer
    x = 30,687.51

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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.