Home / 15,868.87-21,899.21-9,154.37

Finding the Fourth Proportional to 15,868.87, 21,899.21 and 9,154.37

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Solution

The fourth proportional to 15,868.87, 21,899.21 and 9,154.37 is: 12,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.87 : 21,899.21 = 9,154.37 : x
  2. Step 2: Convert to fraction form
    15,868.87/21,899.21 = 9,154.37/x
  3. Step 3: Cross multiply
    15,868.87x = 21,899.21 × 9,154.37
  4. Step 4: Simplify right side
    15,868.87x = 200,473,480.02
  5. Step 5: Solve for x
    x = 200,473,480.02/15,868.87
  6. Step 6: Final answer
    x = 12,633.13

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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.