Home / 13,888.90-19,166.91-7,839.46

Finding the Fourth Proportional to 13,888.90, 19,166.91 and 7,839.46

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Solution

The fourth proportional to 13,888.90, 19,166.91 and 7,839.46 is: 10,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.90 : 19,166.91 = 7,839.46 : x
  2. Step 2: Convert to fraction form
    13,888.90/19,166.91 = 7,839.46/x
  3. Step 3: Cross multiply
    13,888.90x = 19,166.91 × 7,839.46
  4. Step 4: Simplify right side
    13,888.90x = 150,258,094.63
  5. Step 5: Solve for x
    x = 150,258,094.63/13,888.90
  6. Step 6: Final answer
    x = 10,818.57

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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.