Home / 19,356.12-26,721.52-15,039.60

Finding the Fourth Proportional to 19,356.12, 26,721.52 and 15,039.60

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Solution

The fourth proportional to 19,356.12, 26,721.52 and 15,039.60 is: 20,762.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.12 : 26,721.52 = 15,039.60 : x
  2. Step 2: Convert to fraction form
    19,356.12/26,721.52 = 15,039.60/x
  3. Step 3: Cross multiply
    19,356.12x = 26,721.52 × 15,039.60
  4. Step 4: Simplify right side
    19,356.12x = 401,880,972.19
  5. Step 5: Solve for x
    x = 401,880,972.19/19,356.12
  6. Step 6: Final answer
    x = 20,762.48

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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.