Home / 21,260.21-31,870.59-9,407.67

Finding the Fourth Proportional to 21,260.21, 31,870.59 and 9,407.67

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Solution

The fourth proportional to 21,260.21, 31,870.59 and 9,407.67 is: 14,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.21 : 31,870.59 = 9,407.67 : x
  2. Step 2: Convert to fraction form
    21,260.21/31,870.59 = 9,407.67/x
  3. Step 3: Cross multiply
    21,260.21x = 31,870.59 × 9,407.67
  4. Step 4: Simplify right side
    21,260.21x = 299,827,993.43
  5. Step 5: Solve for x
    x = 299,827,993.43/21,260.21
  6. Step 6: Final answer
    x = 14,102.78

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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.