Home / 16,245.80-22,420.70-9,870.91

Finding the Fourth Proportional to 16,245.80, 22,420.70 and 9,870.91

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Solution

The fourth proportional to 16,245.80, 22,420.70 and 9,870.91 is: 13,622.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,245.80 : 22,420.70 = 9,870.91 : x
  2. Step 2: Convert to fraction form
    16,245.80/22,420.70 = 9,870.91/x
  3. Step 3: Cross multiply
    16,245.80x = 22,420.70 × 9,870.91
  4. Step 4: Simplify right side
    16,245.80x = 221,312,769.56
  5. Step 5: Solve for x
    x = 221,312,769.56/16,245.80
  6. Step 6: Final answer
    x = 13,622.77

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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.