Home / 28,561.93-42,853.15-12,765.65

Finding the Fourth Proportional to 28,561.93, 42,853.15 and 12,765.65

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Solution

The fourth proportional to 28,561.93, 42,853.15 and 12,765.65 is: 19,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.93 : 42,853.15 = 12,765.65 : x
  2. Step 2: Convert to fraction form
    28,561.93/42,853.15 = 12,765.65/x
  3. Step 3: Cross multiply
    28,561.93x = 42,853.15 × 12,765.65
  4. Step 4: Simplify right side
    28,561.93x = 547,048,115.99
  5. Step 5: Solve for x
    x = 547,048,115.99/28,561.93
  6. Step 6: Final answer
    x = 19,153.05

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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.