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Finding the Fourth Proportional to 15,075.32, 20,805.22 and 8,363.11

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Solution

The fourth proportional to 15,075.32, 20,805.22 and 8,363.11 is: 11,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.32 : 20,805.22 = 8,363.11 : x
  2. Step 2: Convert to fraction form
    15,075.32/20,805.22 = 8,363.11/x
  3. Step 3: Cross multiply
    15,075.32x = 20,805.22 × 8,363.11
  4. Step 4: Simplify right side
    15,075.32x = 173,996,323.24
  5. Step 5: Solve for x
    x = 173,996,323.24/15,075.32
  6. Step 6: Final answer
    x = 11,541.80

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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.