Home / 21,282.84-29,369.76-11,851.20

Finding the Fourth Proportional to 21,282.84, 29,369.76 and 11,851.20

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Solution

The fourth proportional to 21,282.84, 29,369.76 and 11,851.20 is: 16,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.84 : 29,369.76 = 11,851.20 : x
  2. Step 2: Convert to fraction form
    21,282.84/29,369.76 = 11,851.20/x
  3. Step 3: Cross multiply
    21,282.84x = 29,369.76 × 11,851.20
  4. Step 4: Simplify right side
    21,282.84x = 348,066,899.71
  5. Step 5: Solve for x
    x = 348,066,899.71/21,282.84
  6. Step 6: Final answer
    x = 16,354.34

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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.