Home / 13,823.49-19,061.36-9,339.47

Finding the Fourth Proportional to 13,823.49, 19,061.36 and 9,339.47

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Solution

The fourth proportional to 13,823.49, 19,061.36 and 9,339.47 is: 12,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.49 : 19,061.36 = 9,339.47 : x
  2. Step 2: Convert to fraction form
    13,823.49/19,061.36 = 9,339.47/x
  3. Step 3: Cross multiply
    13,823.49x = 19,061.36 × 9,339.47
  4. Step 4: Simplify right side
    13,823.49x = 178,022,964.38
  5. Step 5: Solve for x
    x = 178,022,964.38/13,823.49
  6. Step 6: Final answer
    x = 12,878.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.