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Finding the Fourth Proportional to 18,705.69, 28,058.53 and 7,010.71

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Solution

The fourth proportional to 18,705.69, 28,058.53 and 7,010.71 is: 10,516.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.69 : 28,058.53 = 7,010.71 : x
  2. Step 2: Convert to fraction form
    18,705.69/28,058.53 = 7,010.71/x
  3. Step 3: Cross multiply
    18,705.69x = 28,058.53 × 7,010.71
  4. Step 4: Simplify right side
    18,705.69x = 196,710,216.86
  5. Step 5: Solve for x
    x = 196,710,216.86/18,705.69
  6. Step 6: Final answer
    x = 10,516.06

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Similar ratio
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1.5x scale

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.