Home / 21,224.10-29,281.30-13,154.07

Finding the Fourth Proportional to 21,224.10, 29,281.30 and 13,154.07

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Solution

The fourth proportional to 21,224.10, 29,281.30 and 13,154.07 is: 18,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.10 : 29,281.30 = 13,154.07 : x
  2. Step 2: Convert to fraction form
    21,224.10/29,281.30 = 13,154.07/x
  3. Step 3: Cross multiply
    21,224.10x = 29,281.30 × 13,154.07
  4. Step 4: Simplify right side
    21,224.10x = 385,168,269.89
  5. Step 5: Solve for x
    x = 385,168,269.89/21,224.10
  6. Step 6: Final answer
    x = 18,147.68

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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.