Home / 22,720.65-31,348.20-13,643.67

Finding the Fourth Proportional to 22,720.65, 31,348.20 and 13,643.67

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Solution

The fourth proportional to 22,720.65, 31,348.20 and 13,643.67 is: 18,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.65 : 31,348.20 = 13,643.67 : x
  2. Step 2: Convert to fraction form
    22,720.65/31,348.20 = 13,643.67/x
  3. Step 3: Cross multiply
    22,720.65x = 31,348.20 × 13,643.67
  4. Step 4: Simplify right side
    22,720.65x = 427,704,495.89
  5. Step 5: Solve for x
    x = 427,704,495.89/22,720.65
  6. Step 6: Final answer
    x = 18,824.48

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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.