Home / 16,815.30-23,177.79-13,447.32

Finding the Fourth Proportional to 16,815.30, 23,177.79 and 13,447.32

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Solution

The fourth proportional to 16,815.30, 23,177.79 and 13,447.32 is: 18,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.30 : 23,177.79 = 13,447.32 : x
  2. Step 2: Convert to fraction form
    16,815.30/23,177.79 = 13,447.32/x
  3. Step 3: Cross multiply
    16,815.30x = 23,177.79 × 13,447.32
  4. Step 4: Simplify right side
    16,815.30x = 311,679,159.02
  5. Step 5: Solve for x
    x = 311,679,159.02/16,815.30
  6. Step 6: Final answer
    x = 18,535.45

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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.