Home / 19,329.78-26,678.88-11,378.82

Finding the Fourth Proportional to 19,329.78, 26,678.88 and 11,378.82

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Solution

The fourth proportional to 19,329.78, 26,678.88 and 11,378.82 is: 15,705.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.78 : 26,678.88 = 11,378.82 : x
  2. Step 2: Convert to fraction form
    19,329.78/26,678.88 = 11,378.82/x
  3. Step 3: Cross multiply
    19,329.78x = 26,678.88 × 11,378.82
  4. Step 4: Simplify right side
    19,329.78x = 303,574,173.32
  5. Step 5: Solve for x
    x = 303,574,173.32/19,329.78
  6. Step 6: Final answer
    x = 15,705.00

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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.