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Finding the Fourth Proportional to 14,519.79, 20,038.10 and 10,928.30

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Solution

The fourth proportional to 14,519.79, 20,038.10 and 10,928.30 is: 15,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,519.79 : 20,038.10 = 10,928.30 : x
  2. Step 2: Convert to fraction form
    14,519.79/20,038.10 = 10,928.30/x
  3. Step 3: Cross multiply
    14,519.79x = 20,038.10 × 10,928.30
  4. Step 4: Simplify right side
    14,519.79x = 218,982,213.40
  5. Step 5: Solve for x
    x = 218,982,213.40/14,519.79
  6. Step 6: Final answer
    x = 15,081.64

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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.