Home / 15,931.24-21,985.06-8,857.66

Finding the Fourth Proportional to 15,931.24, 21,985.06 and 8,857.66

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Solution

The fourth proportional to 15,931.24, 21,985.06 and 8,857.66 is: 12,223.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.24 : 21,985.06 = 8,857.66 : x
  2. Step 2: Convert to fraction form
    15,931.24/21,985.06 = 8,857.66/x
  3. Step 3: Cross multiply
    15,931.24x = 21,985.06 × 8,857.66
  4. Step 4: Simplify right side
    15,931.24x = 194,736,186.56
  5. Step 5: Solve for x
    x = 194,736,186.56/15,931.24
  6. Step 6: Final answer
    x = 12,223.54

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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.