Home / 42,670.57-64,005.86-11,505.82

Finding the Fourth Proportional to 42,670.57, 64,005.86 and 11,505.82

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Solution

The fourth proportional to 42,670.57, 64,005.86 and 11,505.82 is: 17,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,670.57 : 64,005.86 = 11,505.82 : x
  2. Step 2: Convert to fraction form
    42,670.57/64,005.86 = 11,505.82/x
  3. Step 3: Cross multiply
    42,670.57x = 64,005.86 × 11,505.82
  4. Step 4: Simplify right side
    42,670.57x = 736,439,904.11
  5. Step 5: Solve for x
    x = 736,439,904.11/42,670.57
  6. Step 6: Final answer
    x = 17,258.73

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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.