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Finding the Fourth Proportional to 15,191.04, 20,999.04 and 14,570.88

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Solution

The fourth proportional to 15,191.04, 20,999.04 and 14,570.88 is: 20,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.04 : 20,999.04 = 14,570.88 : x
  2. Step 2: Convert to fraction form
    15,191.04/20,999.04 = 14,570.88/x
  3. Step 3: Cross multiply
    15,191.04x = 20,999.04 × 14,570.88
  4. Step 4: Simplify right side
    15,191.04x = 305,974,491.96
  5. Step 5: Solve for x
    x = 305,974,491.96/15,191.04
  6. Step 6: Final answer
    x = 20,141.77

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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.