Home / 13,685.41-18,885.85-7,397.79

Finding the Fourth Proportional to 13,685.41, 18,885.85 and 7,397.79

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Solution

The fourth proportional to 13,685.41, 18,885.85 and 7,397.79 is: 10,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.41 : 18,885.85 = 7,397.79 : x
  2. Step 2: Convert to fraction form
    13,685.41/18,885.85 = 7,397.79/x
  3. Step 3: Cross multiply
    13,685.41x = 18,885.85 × 7,397.79
  4. Step 4: Simplify right side
    13,685.41x = 139,713,552.27
  5. Step 5: Solve for x
    x = 139,713,552.27/13,685.41
  6. Step 6: Final answer
    x = 10,208.94

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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.