Home / 28,075.56-42,126.50-12,278.57

Finding the Fourth Proportional to 28,075.56, 42,126.50 and 12,278.57

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Solution

The fourth proportional to 28,075.56, 42,126.50 and 12,278.57 is: 18,423.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.56 : 42,126.50 = 12,278.57 : x
  2. Step 2: Convert to fraction form
    28,075.56/42,126.50 = 12,278.57/x
  3. Step 3: Cross multiply
    28,075.56x = 42,126.50 × 12,278.57
  4. Step 4: Simplify right side
    28,075.56x = 517,253,179.11
  5. Step 5: Solve for x
    x = 517,253,179.11/28,075.56
  6. Step 6: Final answer
    x = 18,423.61

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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.