Home / 21,097.45-31,639.69-10,000.86

Finding the Fourth Proportional to 21,097.45, 31,639.69 and 10,000.86

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Solution

The fourth proportional to 21,097.45, 31,639.69 and 10,000.86 is: 14,998.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.45 : 31,639.69 = 10,000.86 : x
  2. Step 2: Convert to fraction form
    21,097.45/31,639.69 = 10,000.86/x
  3. Step 3: Cross multiply
    21,097.45x = 31,639.69 × 10,000.86
  4. Step 4: Simplify right side
    21,097.45x = 316,424,110.13
  5. Step 5: Solve for x
    x = 316,424,110.13/21,097.45
  6. Step 6: Final answer
    x = 14,998.22

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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.