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Finding the Fourth Proportional to 14,357.32, 19,812.64 and 7,983.88

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Solution

The fourth proportional to 14,357.32, 19,812.64 and 7,983.88 is: 11,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,357.32 : 19,812.64 = 7,983.88 : x
  2. Step 2: Convert to fraction form
    14,357.32/19,812.64 = 7,983.88/x
  3. Step 3: Cross multiply
    14,357.32x = 19,812.64 × 7,983.88
  4. Step 4: Simplify right side
    14,357.32x = 158,181,740.24
  5. Step 5: Solve for x
    x = 158,181,740.24/14,357.32
  6. Step 6: Final answer
    x = 11,017.50

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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.