Home / 20,315.61-28,035.57-11,363.25

Finding the Fourth Proportional to 20,315.61, 28,035.57 and 11,363.25

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Solution

The fourth proportional to 20,315.61, 28,035.57 and 11,363.25 is: 15,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.61 : 28,035.57 = 11,363.25 : x
  2. Step 2: Convert to fraction form
    20,315.61/28,035.57 = 11,363.25/x
  3. Step 3: Cross multiply
    20,315.61x = 28,035.57 × 11,363.25
  4. Step 4: Simplify right side
    20,315.61x = 318,575,190.80
  5. Step 5: Solve for x
    x = 318,575,190.80/20,315.61
  6. Step 6: Final answer
    x = 15,681.30

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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.