Home / 20,017.81-27,624.47-11,520.10

Finding the Fourth Proportional to 20,017.81, 27,624.47 and 11,520.10

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Solution

The fourth proportional to 20,017.81, 27,624.47 and 11,520.10 is: 15,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.81 : 27,624.47 = 11,520.10 : x
  2. Step 2: Convert to fraction form
    20,017.81/27,624.47 = 11,520.10/x
  3. Step 3: Cross multiply
    20,017.81x = 27,624.47 × 11,520.10
  4. Step 4: Simplify right side
    20,017.81x = 318,236,530.19
  5. Step 5: Solve for x
    x = 318,236,530.19/20,017.81
  6. Step 6: Final answer
    x = 15,897.67

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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.