Home / 21,402.63-29,525.67-13,851.39

Finding the Fourth Proportional to 21,402.63, 29,525.67 and 13,851.39

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Solution

The fourth proportional to 21,402.63, 29,525.67 and 13,851.39 is: 19,108.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.63 : 29,525.67 = 13,851.39 : x
  2. Step 2: Convert to fraction form
    21,402.63/29,525.67 = 13,851.39/x
  3. Step 3: Cross multiply
    21,402.63x = 29,525.67 × 13,851.39
  4. Step 4: Simplify right side
    21,402.63x = 408,971,570.18
  5. Step 5: Solve for x
    x = 408,971,570.18/21,402.63
  6. Step 6: Final answer
    x = 19,108.47

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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.