Home / 15,075.28-20,802.36-8,359.84

Finding the Fourth Proportional to 15,075.28, 20,802.36 and 8,359.84

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Solution

The fourth proportional to 15,075.28, 20,802.36 and 8,359.84 is: 11,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.28 : 20,802.36 = 8,359.84 : x
  2. Step 2: Convert to fraction form
    15,075.28/20,802.36 = 8,359.84/x
  3. Step 3: Cross multiply
    15,075.28x = 20,802.36 × 8,359.84
  4. Step 4: Simplify right side
    15,075.28x = 173,904,401.22
  5. Step 5: Solve for x
    x = 173,904,401.22/15,075.28
  6. Step 6: Final answer
    x = 11,535.73

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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.