Home / 15,692.85-21,655.49-10,019.61

Finding the Fourth Proportional to 15,692.85, 21,655.49 and 10,019.61

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Solution

The fourth proportional to 15,692.85, 21,655.49 and 10,019.61 is: 13,826.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.85 : 21,655.49 = 10,019.61 : x
  2. Step 2: Convert to fraction form
    15,692.85/21,655.49 = 10,019.61/x
  3. Step 3: Cross multiply
    15,692.85x = 21,655.49 × 10,019.61
  4. Step 4: Simplify right side
    15,692.85x = 216,979,514.06
  5. Step 5: Solve for x
    x = 216,979,514.06/15,692.85
  6. Step 6: Final answer
    x = 13,826.65

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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.