Home / 30,937.40-42,703.90-22,010.80

Finding the Fourth Proportional to 30,937.40, 42,703.90 and 22,010.80

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Solution

The fourth proportional to 30,937.40, 42,703.90 and 22,010.80 is: 30,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,937.40 : 42,703.90 = 22,010.80 : x
  2. Step 2: Convert to fraction form
    30,937.40/42,703.90 = 22,010.80/x
  3. Step 3: Cross multiply
    30,937.40x = 42,703.90 × 22,010.80
  4. Step 4: Simplify right side
    30,937.40x = 939,947,002.12
  5. Step 5: Solve for x
    x = 939,947,002.12/30,937.40
  6. Step 6: Final answer
    x = 30,382.22

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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.