Home / 42,784.65-64,178.79-13,201.83

Finding the Fourth Proportional to 42,784.65, 64,178.79 and 13,201.83

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Solution

The fourth proportional to 42,784.65, 64,178.79 and 13,201.83 is: 19,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,784.65 : 64,178.79 = 13,201.83 : x
  2. Step 2: Convert to fraction form
    42,784.65/64,178.79 = 13,201.83/x
  3. Step 3: Cross multiply
    42,784.65x = 64,178.79 × 13,201.83
  4. Step 4: Simplify right side
    42,784.65x = 847,277,475.19
  5. Step 5: Solve for x
    x = 847,277,475.19/42,784.65
  6. Step 6: Final answer
    x = 19,803.31

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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.