Home / 21,215.10-29,214.63-19,441.02

Finding the Fourth Proportional to 21,215.10, 29,214.63 and 19,441.02

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Solution

The fourth proportional to 21,215.10, 29,214.63 and 19,441.02 is: 26,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.10 : 29,214.63 = 19,441.02 : x
  2. Step 2: Convert to fraction form
    21,215.10/29,214.63 = 19,441.02/x
  3. Step 3: Cross multiply
    21,215.10x = 29,214.63 × 19,441.02
  4. Step 4: Simplify right side
    21,215.10x = 567,962,206.12
  5. Step 5: Solve for x
    x = 567,962,206.12/21,215.10
  6. Step 6: Final answer
    x = 26,771.60

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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.