Home / 13,107.69-18,088.79-7,442.01

Finding the Fourth Proportional to 13,107.69, 18,088.79 and 7,442.01

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Solution

The fourth proportional to 13,107.69, 18,088.79 and 7,442.01 is: 10,270.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.69 : 18,088.79 = 7,442.01 : x
  2. Step 2: Convert to fraction form
    13,107.69/18,088.79 = 7,442.01/x
  3. Step 3: Cross multiply
    13,107.69x = 18,088.79 × 7,442.01
  4. Step 4: Simplify right side
    13,107.69x = 134,616,918.86
  5. Step 5: Solve for x
    x = 134,616,918.86/13,107.69
  6. Step 6: Final answer
    x = 10,270.07

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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.