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Finding the Fourth Proportional to 14,038.70, 19,375.50 and 8,735.20

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Solution

The fourth proportional to 14,038.70, 19,375.50 and 8,735.20 is: 12,055.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,038.70 : 19,375.50 = 8,735.20 : x
  2. Step 2: Convert to fraction form
    14,038.70/19,375.50 = 8,735.20/x
  3. Step 3: Cross multiply
    14,038.70x = 19,375.50 × 8,735.20
  4. Step 4: Simplify right side
    14,038.70x = 169,248,867.60
  5. Step 5: Solve for x
    x = 169,248,867.60/14,038.70
  6. Step 6: Final answer
    x = 12,055.88

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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.