Home / 10,075.50-15,115.38-4,228.74

Finding the Fourth Proportional to 10,075.50, 15,115.38 and 4,228.74

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Solution

The fourth proportional to 10,075.50, 15,115.38 and 4,228.74 is: 6,344.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,075.50 : 15,115.38 = 4,228.74 : x
  2. Step 2: Convert to fraction form
    10,075.50/15,115.38 = 4,228.74/x
  3. Step 3: Cross multiply
    10,075.50x = 15,115.38 × 4,228.74
  4. Step 4: Simplify right side
    10,075.50x = 63,919,012.02
  5. Step 5: Solve for x
    x = 63,919,012.02/10,075.50
  6. Step 6: Final answer
    x = 6,344.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.