Home / 43,139.52-64,709.28-11,974.72

Finding the Fourth Proportional to 43,139.52, 64,709.28 and 11,974.72

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Solution

The fourth proportional to 43,139.52, 64,709.28 and 11,974.72 is: 17,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.52 : 64,709.28 = 11,974.72 : x
  2. Step 2: Convert to fraction form
    43,139.52/64,709.28 = 11,974.72/x
  3. Step 3: Cross multiply
    43,139.52x = 64,709.28 × 11,974.72
  4. Step 4: Simplify right side
    43,139.52x = 774,875,509.40
  5. Step 5: Solve for x
    x = 774,875,509.40/43,139.52
  6. Step 6: Final answer
    x = 17,962.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.