Home / 15,075.05-20,803.17-8,360.66

Finding the Fourth Proportional to 15,075.05, 20,803.17 and 8,360.66

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Solution

The fourth proportional to 15,075.05, 20,803.17 and 8,360.66 is: 11,537.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.05 : 20,803.17 = 8,360.66 : x
  2. Step 2: Convert to fraction form
    15,075.05/20,803.17 = 8,360.66/x
  3. Step 3: Cross multiply
    15,075.05x = 20,803.17 × 8,360.66
  4. Step 4: Simplify right side
    15,075.05x = 173,928,127.28
  5. Step 5: Solve for x
    x = 173,928,127.28/15,075.05
  6. Step 6: Final answer
    x = 11,537.49

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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.