Home / 15,075.48-20,803.72-8,361.80

Finding the Fourth Proportional to 15,075.48, 20,803.72 and 8,361.80

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Solution

The fourth proportional to 15,075.48, 20,803.72 and 8,361.80 is: 11,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.48 : 20,803.72 = 8,361.80 : x
  2. Step 2: Convert to fraction form
    15,075.48/20,803.72 = 8,361.80/x
  3. Step 3: Cross multiply
    15,075.48x = 20,803.72 × 8,361.80
  4. Step 4: Simplify right side
    15,075.48x = 173,956,545.90
  5. Step 5: Solve for x
    x = 173,956,545.90/15,075.48
  6. Step 6: Final answer
    x = 11,539.04

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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.