Home / 21,354.82-29,421.69-14,888.45

Finding the Fourth Proportional to 21,354.82, 29,421.69 and 14,888.45

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Solution

The fourth proportional to 21,354.82, 29,421.69 and 14,888.45 is: 20,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.82 : 29,421.69 = 14,888.45 : x
  2. Step 2: Convert to fraction form
    21,354.82/29,421.69 = 14,888.45/x
  3. Step 3: Cross multiply
    21,354.82x = 29,421.69 × 14,888.45
  4. Step 4: Simplify right side
    21,354.82x = 438,043,360.48
  5. Step 5: Solve for x
    x = 438,043,360.48/21,354.82
  6. Step 6: Final answer
    x = 20,512.63

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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.