Home / 15,865.72-21,895.26-9,153.64

Finding the Fourth Proportional to 15,865.72, 21,895.26 and 9,153.64

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Solution

The fourth proportional to 15,865.72, 21,895.26 and 9,153.64 is: 12,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.72 : 21,895.26 = 9,153.64 : x
  2. Step 2: Convert to fraction form
    15,865.72/21,895.26 = 9,153.64/x
  3. Step 3: Cross multiply
    15,865.72x = 21,895.26 × 9,153.64
  4. Step 4: Simplify right side
    15,865.72x = 200,421,327.75
  5. Step 5: Solve for x
    x = 200,421,327.75/15,865.72
  6. Step 6: Final answer
    x = 12,632.35

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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.