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Finding the Fourth Proportional to 14,168.78, 21,253.92 and 4,307.31

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Solution

The fourth proportional to 14,168.78, 21,253.92 and 4,307.31 is: 6,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,168.78 : 21,253.92 = 4,307.31 : x
  2. Step 2: Convert to fraction form
    14,168.78/21,253.92 = 4,307.31/x
  3. Step 3: Cross multiply
    14,168.78x = 21,253.92 × 4,307.31
  4. Step 4: Simplify right side
    14,168.78x = 91,547,222.16
  5. Step 5: Solve for x
    x = 91,547,222.16/14,168.78
  6. Step 6: Final answer
    x = 6,461.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.