Home / 19,386.65-26,753.82-11,428.40

Finding the Fourth Proportional to 19,386.65, 26,753.82 and 11,428.40

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Solution

The fourth proportional to 19,386.65, 26,753.82 and 11,428.40 is: 15,771.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.65 : 26,753.82 = 11,428.40 : x
  2. Step 2: Convert to fraction form
    19,386.65/26,753.82 = 11,428.40/x
  3. Step 3: Cross multiply
    19,386.65x = 26,753.82 × 11,428.40
  4. Step 4: Simplify right side
    19,386.65x = 305,753,356.49
  5. Step 5: Solve for x
    x = 305,753,356.49/19,386.65
  6. Step 6: Final answer
    x = 15,771.34

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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.