Home / 13,685.46-18,887.01-7,637.61

Finding the Fourth Proportional to 13,685.46, 18,887.01 and 7,637.61

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Solution

The fourth proportional to 13,685.46, 18,887.01 and 7,637.61 is: 10,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.46 : 18,887.01 = 7,637.61 : x
  2. Step 2: Convert to fraction form
    13,685.46/18,887.01 = 7,637.61/x
  3. Step 3: Cross multiply
    13,685.46x = 18,887.01 × 7,637.61
  4. Step 4: Simplify right side
    13,685.46x = 144,251,616.45
  5. Step 5: Solve for x
    x = 144,251,616.45/13,685.46
  6. Step 6: Final answer
    x = 10,540.50

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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.