Home / 13,566.19-18,720.79-7,901.11

Finding the Fourth Proportional to 13,566.19, 18,720.79 and 7,901.11

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Solution

The fourth proportional to 13,566.19, 18,720.79 and 7,901.11 is: 10,903.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.19 : 18,720.79 = 7,901.11 : x
  2. Step 2: Convert to fraction form
    13,566.19/18,720.79 = 7,901.11/x
  3. Step 3: Cross multiply
    13,566.19x = 18,720.79 × 7,901.11
  4. Step 4: Simplify right side
    13,566.19x = 147,915,021.08
  5. Step 5: Solve for x
    x = 147,915,021.08/13,566.19
  6. Step 6: Final answer
    x = 10,903.21

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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.