Home / 21,627.63-29,848.22-13,127.80

Finding the Fourth Proportional to 21,627.63, 29,848.22 and 13,127.80

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Solution

The fourth proportional to 21,627.63, 29,848.22 and 13,127.80 is: 18,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.63 : 29,848.22 = 13,127.80 : x
  2. Step 2: Convert to fraction form
    21,627.63/29,848.22 = 13,127.80/x
  3. Step 3: Cross multiply
    21,627.63x = 29,848.22 × 13,127.80
  4. Step 4: Simplify right side
    21,627.63x = 391,841,420.71
  5. Step 5: Solve for x
    x = 391,841,420.71/21,627.63
  6. Step 6: Final answer
    x = 18,117.63

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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.