Home / 15,965.40-22,029.66-8,890.50

Finding the Fourth Proportional to 15,965.40, 22,029.66 and 8,890.50

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Solution

The fourth proportional to 15,965.40, 22,029.66 and 8,890.50 is: 12,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.40 : 22,029.66 = 8,890.50 : x
  2. Step 2: Convert to fraction form
    15,965.40/22,029.66 = 8,890.50/x
  3. Step 3: Cross multiply
    15,965.40x = 22,029.66 × 8,890.50
  4. Step 4: Simplify right side
    15,965.40x = 195,854,692.23
  5. Step 5: Solve for x
    x = 195,854,692.23/15,965.40
  6. Step 6: Final answer
    x = 12,267.45

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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.