Home / 20,742.08-31,102.18-9,041.63

Finding the Fourth Proportional to 20,742.08, 31,102.18 and 9,041.63

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Solution

The fourth proportional to 20,742.08, 31,102.18 and 9,041.63 is: 13,557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.08 : 31,102.18 = 9,041.63 : x
  2. Step 2: Convert to fraction form
    20,742.08/31,102.18 = 9,041.63/x
  3. Step 3: Cross multiply
    20,742.08x = 31,102.18 × 9,041.63
  4. Step 4: Simplify right side
    20,742.08x = 281,214,225.64
  5. Step 5: Solve for x
    x = 281,214,225.64/20,742.08
  6. Step 6: Final answer
    x = 13,557.67

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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.