Home / 13,888.27-19,161.05-7,915.62

Finding the Fourth Proportional to 13,888.27, 19,161.05 and 7,915.62

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Solution

The fourth proportional to 13,888.27, 19,161.05 and 7,915.62 is: 10,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.27 : 19,161.05 = 7,915.62 : x
  2. Step 2: Convert to fraction form
    13,888.27/19,161.05 = 7,915.62/x
  3. Step 3: Cross multiply
    13,888.27x = 19,161.05 × 7,915.62
  4. Step 4: Simplify right side
    13,888.27x = 151,671,590.60
  5. Step 5: Solve for x
    x = 151,671,590.60/13,888.27
  6. Step 6: Final answer
    x = 10,920.84

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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.