Home / 28,220.80-42,347.40-10,703.20

Finding the Fourth Proportional to 28,220.80, 42,347.40 and 10,703.20

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Solution

The fourth proportional to 28,220.80, 42,347.40 and 10,703.20 is: 16,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.80 : 42,347.40 = 10,703.20 : x
  2. Step 2: Convert to fraction form
    28,220.80/42,347.40 = 10,703.20/x
  3. Step 3: Cross multiply
    28,220.80x = 42,347.40 × 10,703.20
  4. Step 4: Simplify right side
    28,220.80x = 453,252,691.68
  5. Step 5: Solve for x
    x = 453,252,691.68/28,220.80
  6. Step 6: Final answer
    x = 16,060.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.