Home / 21,282.48-29,370.74-11,851.05

Finding the Fourth Proportional to 21,282.48, 29,370.74 and 11,851.05

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Solution

The fourth proportional to 21,282.48, 29,370.74 and 11,851.05 is: 16,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.48 : 29,370.74 = 11,851.05 : x
  2. Step 2: Convert to fraction form
    21,282.48/29,370.74 = 11,851.05/x
  3. Step 3: Cross multiply
    21,282.48x = 29,370.74 × 11,851.05
  4. Step 4: Simplify right side
    21,282.48x = 348,074,108.28
  5. Step 5: Solve for x
    x = 348,074,108.28/21,282.48
  6. Step 6: Final answer
    x = 16,354.96

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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.