Home / 13,439.16-18,519.84-10,085.76

Finding the Fourth Proportional to 13,439.16, 18,519.84 and 10,085.76

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Solution

The fourth proportional to 13,439.16, 18,519.84 and 10,085.76 is: 13,898.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.16 : 18,519.84 = 10,085.76 : x
  2. Step 2: Convert to fraction form
    13,439.16/18,519.84 = 10,085.76/x
  3. Step 3: Cross multiply
    13,439.16x = 18,519.84 × 10,085.76
  4. Step 4: Simplify right side
    13,439.16x = 186,786,661.48
  5. Step 5: Solve for x
    x = 186,786,661.48/13,439.16
  6. Step 6: Final answer
    x = 13,898.69

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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.