Home / 28,705.86-43,041.14-9,981.54

Finding the Fourth Proportional to 28,705.86, 43,041.14 and 9,981.54

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Solution

The fourth proportional to 28,705.86, 43,041.14 and 9,981.54 is: 14,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.86 : 43,041.14 = 9,981.54 : x
  2. Step 2: Convert to fraction form
    28,705.86/43,041.14 = 9,981.54/x
  3. Step 3: Cross multiply
    28,705.86x = 43,041.14 × 9,981.54
  4. Step 4: Simplify right side
    28,705.86x = 429,616,860.56
  5. Step 5: Solve for x
    x = 429,616,860.56/28,705.86
  6. Step 6: Final answer
    x = 14,966.17

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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.