Home / 14,418.18-19,897.05-8,130.55

Finding the Fourth Proportional to 14,418.18, 19,897.05 and 8,130.55

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Solution

The fourth proportional to 14,418.18, 19,897.05 and 8,130.55 is: 11,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,418.18 : 19,897.05 = 8,130.55 : x
  2. Step 2: Convert to fraction form
    14,418.18/19,897.05 = 8,130.55/x
  3. Step 3: Cross multiply
    14,418.18x = 19,897.05 × 8,130.55
  4. Step 4: Simplify right side
    14,418.18x = 161,773,959.88
  5. Step 5: Solve for x
    x = 161,773,959.88/14,418.18
  6. Step 6: Final answer
    x = 11,220.14

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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.