Home / 21,079.08-31,622.05-9,845.65

Finding the Fourth Proportional to 21,079.08, 31,622.05 and 9,845.65

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Solution

The fourth proportional to 21,079.08, 31,622.05 and 9,845.65 is: 14,770.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.08 : 31,622.05 = 9,845.65 : x
  2. Step 2: Convert to fraction form
    21,079.08/31,622.05 = 9,845.65/x
  3. Step 3: Cross multiply
    21,079.08x = 31,622.05 × 9,845.65
  4. Step 4: Simplify right side
    21,079.08x = 311,339,688.42
  5. Step 5: Solve for x
    x = 311,339,688.42/21,079.08
  6. Step 6: Final answer
    x = 14,770.08

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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.