Home / 15,119.69-20,857.91-9,816.17

Finding the Fourth Proportional to 15,119.69, 20,857.91 and 9,816.17

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Solution

The fourth proportional to 15,119.69, 20,857.91 and 9,816.17 is: 13,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.69 : 20,857.91 = 9,816.17 : x
  2. Step 2: Convert to fraction form
    15,119.69/20,857.91 = 9,816.17/x
  3. Step 3: Cross multiply
    15,119.69x = 20,857.91 × 9,816.17
  4. Step 4: Simplify right side
    15,119.69x = 204,744,741.32
  5. Step 5: Solve for x
    x = 204,744,741.32/15,119.69
  6. Step 6: Final answer
    x = 13,541.60

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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.