Home / 15,315.02-21,135.84-8,601.04

Finding the Fourth Proportional to 15,315.02, 21,135.84 and 8,601.04

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Solution

The fourth proportional to 15,315.02, 21,135.84 and 8,601.04 is: 11,870.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.02 : 21,135.84 = 8,601.04 : x
  2. Step 2: Convert to fraction form
    15,315.02/21,135.84 = 8,601.04/x
  3. Step 3: Cross multiply
    15,315.02x = 21,135.84 × 8,601.04
  4. Step 4: Simplify right side
    15,315.02x = 181,790,212.57
  5. Step 5: Solve for x
    x = 181,790,212.57/15,315.02
  6. Step 6: Final answer
    x = 11,870.06

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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.