Home / 15,381.50-21,225.03-8,666.02

Finding the Fourth Proportional to 15,381.50, 21,225.03 and 8,666.02

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Solution

The fourth proportional to 15,381.50, 21,225.03 and 8,666.02 is: 11,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.50 : 21,225.03 = 8,666.02 : x
  2. Step 2: Convert to fraction form
    15,381.50/21,225.03 = 8,666.02/x
  3. Step 3: Cross multiply
    15,381.50x = 21,225.03 × 8,666.02
  4. Step 4: Simplify right side
    15,381.50x = 183,936,534.48
  5. Step 5: Solve for x
    x = 183,936,534.48/15,381.50
  6. Step 6: Final answer
    x = 11,958.30

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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.