Home / 13,756.01-18,983.75-7,787.57

Finding the Fourth Proportional to 13,756.01, 18,983.75 and 7,787.57

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Solution

The fourth proportional to 13,756.01, 18,983.75 and 7,787.57 is: 10,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.01 : 18,983.75 = 7,787.57 : x
  2. Step 2: Convert to fraction form
    13,756.01/18,983.75 = 7,787.57/x
  3. Step 3: Cross multiply
    13,756.01x = 18,983.75 × 7,787.57
  4. Step 4: Simplify right side
    13,756.01x = 147,837,148.13
  5. Step 5: Solve for x
    x = 147,837,148.13/13,756.01
  6. Step 6: Final answer
    x = 10,747.10

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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.