Home / 13,888.35-20,836.17-5,123.34

Finding the Fourth Proportional to 13,888.35, 20,836.17 and 5,123.34

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Solution

The fourth proportional to 13,888.35, 20,836.17 and 5,123.34 is: 7,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.35 : 20,836.17 = 5,123.34 : x
  2. Step 2: Convert to fraction form
    13,888.35/20,836.17 = 5,123.34/x
  3. Step 3: Cross multiply
    13,888.35x = 20,836.17 × 5,123.34
  4. Step 4: Simplify right side
    13,888.35x = 106,750,783.21
  5. Step 5: Solve for x
    x = 106,750,783.21/13,888.35
  6. Step 6: Final answer
    x = 7,686.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.