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Finding the Fourth Proportional to 14,239.76, 19,649.04 and 7,952.40

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Solution

The fourth proportional to 14,239.76, 19,649.04 and 7,952.40 is: 10,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,239.76 : 19,649.04 = 7,952.40 : x
  2. Step 2: Convert to fraction form
    14,239.76/19,649.04 = 7,952.40/x
  3. Step 3: Cross multiply
    14,239.76x = 19,649.04 × 7,952.40
  4. Step 4: Simplify right side
    14,239.76x = 156,257,025.70
  5. Step 5: Solve for x
    x = 156,257,025.70/14,239.76
  6. Step 6: Final answer
    x = 10,973.29

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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.