Home / 15,931.85-21,986.46-8,762.06

Finding the Fourth Proportional to 15,931.85, 21,986.46 and 8,762.06

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Solution

The fourth proportional to 15,931.85, 21,986.46 and 8,762.06 is: 12,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.85 : 21,986.46 = 8,762.06 : x
  2. Step 2: Convert to fraction form
    15,931.85/21,986.46 = 8,762.06/x
  3. Step 3: Cross multiply
    15,931.85x = 21,986.46 × 8,762.06
  4. Step 4: Simplify right side
    15,931.85x = 192,646,571.78
  5. Step 5: Solve for x
    x = 192,646,571.78/15,931.85
  6. Step 6: Final answer
    x = 12,091.92

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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.