Home / 14,008.50-19,331.79-7,720.74

Finding the Fourth Proportional to 14,008.50, 19,331.79 and 7,720.74

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Solution

The fourth proportional to 14,008.50, 19,331.79 and 7,720.74 is: 10,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.50 : 19,331.79 = 7,720.74 : x
  2. Step 2: Convert to fraction form
    14,008.50/19,331.79 = 7,720.74/x
  3. Step 3: Cross multiply
    14,008.50x = 19,331.79 × 7,720.74
  4. Step 4: Simplify right side
    14,008.50x = 149,255,724.32
  5. Step 5: Solve for x
    x = 149,255,724.32/14,008.50
  6. Step 6: Final answer
    x = 10,654.65

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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.