Home / 15,356.61-21,185.69-9,386.37

Finding the Fourth Proportional to 15,356.61, 21,185.69 and 9,386.37

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Solution

The fourth proportional to 15,356.61, 21,185.69 and 9,386.37 is: 12,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.61 : 21,185.69 = 9,386.37 : x
  2. Step 2: Convert to fraction form
    15,356.61/21,185.69 = 9,386.37/x
  3. Step 3: Cross multiply
    15,356.61x = 21,185.69 × 9,386.37
  4. Step 4: Simplify right side
    15,356.61x = 198,856,678.11
  5. Step 5: Solve for x
    x = 198,856,678.11/15,356.61
  6. Step 6: Final answer
    x = 12,949.26

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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.