Home / 42,918.57-64,376.64-11,753.82

Finding the Fourth Proportional to 42,918.57, 64,376.64 and 11,753.82

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Solution

The fourth proportional to 42,918.57, 64,376.64 and 11,753.82 is: 17,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,918.57 : 64,376.64 = 11,753.82 : x
  2. Step 2: Convert to fraction form
    42,918.57/64,376.64 = 11,753.82/x
  3. Step 3: Cross multiply
    42,918.57x = 64,376.64 × 11,753.82
  4. Step 4: Simplify right side
    42,918.57x = 756,671,438.76
  5. Step 5: Solve for x
    x = 756,671,438.76/42,918.57
  6. Step 6: Final answer
    x = 17,630.40

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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.