Home / 21,271.50-29,354.67-11,840.67

Finding the Fourth Proportional to 21,271.50, 29,354.67 and 11,840.67

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Solution

The fourth proportional to 21,271.50, 29,354.67 and 11,840.67 is: 16,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.50 : 29,354.67 = 11,840.67 : x
  2. Step 2: Convert to fraction form
    21,271.50/29,354.67 = 11,840.67/x
  3. Step 3: Cross multiply
    21,271.50x = 29,354.67 × 11,840.67
  4. Step 4: Simplify right side
    21,271.50x = 347,578,960.43
  5. Step 5: Solve for x
    x = 347,578,960.43/21,271.50
  6. Step 6: Final answer
    x = 16,340.12

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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.