Home / 26,639.91-39,948.48-9,988.40

Finding the Fourth Proportional to 26,639.91, 39,948.48 and 9,988.40

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Solution

The fourth proportional to 26,639.91, 39,948.48 and 9,988.40 is: 14,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,639.91 : 39,948.48 = 9,988.40 : x
  2. Step 2: Convert to fraction form
    26,639.91/39,948.48 = 9,988.40/x
  3. Step 3: Cross multiply
    26,639.91x = 39,948.48 × 9,988.40
  4. Step 4: Simplify right side
    26,639.91x = 399,021,497.50
  5. Step 5: Solve for x
    x = 399,021,497.50/26,639.91
  6. Step 6: Final answer
    x = 14,978.34

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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.