Home / 21,317.10-29,409.88-12,359.67

Finding the Fourth Proportional to 21,317.10, 29,409.88 and 12,359.67

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Solution

The fourth proportional to 21,317.10, 29,409.88 and 12,359.67 is: 17,051.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.10 : 29,409.88 = 12,359.67 : x
  2. Step 2: Convert to fraction form
    21,317.10/29,409.88 = 12,359.67/x
  3. Step 3: Cross multiply
    21,317.10x = 29,409.88 × 12,359.67
  4. Step 4: Simplify right side
    21,317.10x = 363,496,411.54
  5. Step 5: Solve for x
    x = 363,496,411.54/21,317.10
  6. Step 6: Final answer
    x = 17,051.87

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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.