Home / 28,429.28-39,248.44-19,713.68

Finding the Fourth Proportional to 28,429.28, 39,248.44 and 19,713.68

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Solution

The fourth proportional to 28,429.28, 39,248.44 and 19,713.68 is: 27,216.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.28 : 39,248.44 = 19,713.68 : x
  2. Step 2: Convert to fraction form
    28,429.28/39,248.44 = 19,713.68/x
  3. Step 3: Cross multiply
    28,429.28x = 39,248.44 × 19,713.68
  4. Step 4: Simplify right side
    28,429.28x = 773,731,186.66
  5. Step 5: Solve for x
    x = 773,731,186.66/28,429.28
  6. Step 6: Final answer
    x = 27,216.00

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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.