Home / 21,089.18-31,639.25-9,995.63

Finding the Fourth Proportional to 21,089.18, 31,639.25 and 9,995.63

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Solution

The fourth proportional to 21,089.18, 31,639.25 and 9,995.63 is: 14,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.18 : 31,639.25 = 9,995.63 : x
  2. Step 2: Convert to fraction form
    21,089.18/31,639.25 = 9,995.63/x
  3. Step 3: Cross multiply
    21,089.18x = 31,639.25 × 9,995.63
  4. Step 4: Simplify right side
    21,089.18x = 316,254,103.27
  5. Step 5: Solve for x
    x = 316,254,103.27/21,089.18
  6. Step 6: Final answer
    x = 14,996.03

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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.