Home / 15,865.85-21,895.02-8,792.42

Finding the Fourth Proportional to 15,865.85, 21,895.02 and 8,792.42

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Solution

The fourth proportional to 15,865.85, 21,895.02 and 8,792.42 is: 12,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.85 : 21,895.02 = 8,792.42 : x
  2. Step 2: Convert to fraction form
    15,865.85/21,895.02 = 8,792.42/x
  3. Step 3: Cross multiply
    15,865.85x = 21,895.02 × 8,792.42
  4. Step 4: Simplify right side
    15,865.85x = 192,510,211.75
  5. Step 5: Solve for x
    x = 192,510,211.75/15,865.85
  6. Step 6: Final answer
    x = 12,133.62

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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.