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Finding the Fourth Proportional to 14,319.99, 19,761.71 and 7,947.01

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Solution

The fourth proportional to 14,319.99, 19,761.71 and 7,947.01 is: 10,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.99 : 19,761.71 = 7,947.01 : x
  2. Step 2: Convert to fraction form
    14,319.99/19,761.71 = 7,947.01/x
  3. Step 3: Cross multiply
    14,319.99x = 19,761.71 × 7,947.01
  4. Step 4: Simplify right side
    14,319.99x = 157,046,525.48
  5. Step 5: Solve for x
    x = 157,046,525.48/14,319.99
  6. Step 6: Final answer
    x = 10,966.94

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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.