Home / 13,937.89-19,207.71-13,681.66

Finding the Fourth Proportional to 13,937.89, 19,207.71 and 13,681.66

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Solution

The fourth proportional to 13,937.89, 19,207.71 and 13,681.66 is: 18,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.89 : 19,207.71 = 13,681.66 : x
  2. Step 2: Convert to fraction form
    13,937.89/19,207.71 = 13,681.66/x
  3. Step 3: Cross multiply
    13,937.89x = 19,207.71 × 13,681.66
  4. Step 4: Simplify right side
    13,937.89x = 262,793,364.83
  5. Step 5: Solve for x
    x = 262,793,364.83/13,937.89
  6. Step 6: Final answer
    x = 18,854.61

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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.