Home / 15,931.55-21,985.56-8,857.98

Finding the Fourth Proportional to 15,931.55, 21,985.56 and 8,857.98

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Solution

The fourth proportional to 15,931.55, 21,985.56 and 8,857.98 is: 12,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.55 : 21,985.56 = 8,857.98 : x
  2. Step 2: Convert to fraction form
    15,931.55/21,985.56 = 8,857.98/x
  3. Step 3: Cross multiply
    15,931.55x = 21,985.56 × 8,857.98
  4. Step 4: Simplify right side
    15,931.55x = 194,747,650.77
  5. Step 5: Solve for x
    x = 194,747,650.77/15,931.55
  6. Step 6: Final answer
    x = 12,224.03

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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.