Home / 20,870.16-31,295.22-9,767.52

Finding the Fourth Proportional to 20,870.16, 31,295.22 and 9,767.52

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Solution

The fourth proportional to 20,870.16, 31,295.22 and 9,767.52 is: 14,646.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.16 : 31,295.22 = 9,767.52 : x
  2. Step 2: Convert to fraction form
    20,870.16/31,295.22 = 9,767.52/x
  3. Step 3: Cross multiply
    20,870.16x = 31,295.22 × 9,767.52
  4. Step 4: Simplify right side
    20,870.16x = 305,676,687.25
  5. Step 5: Solve for x
    x = 305,676,687.25/20,870.16
  6. Step 6: Final answer
    x = 14,646.59

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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.