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Finding the Fourth Proportional to 14,220.16, 19,620.48 and 8,630.08

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Solution

The fourth proportional to 14,220.16, 19,620.48 and 8,630.08 is: 11,907.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.16 : 19,620.48 = 8,630.08 : x
  2. Step 2: Convert to fraction form
    14,220.16/19,620.48 = 8,630.08/x
  3. Step 3: Cross multiply
    14,220.16x = 19,620.48 × 8,630.08
  4. Step 4: Simplify right side
    14,220.16x = 169,326,312.04
  5. Step 5: Solve for x
    x = 169,326,312.04/14,220.16
  6. Step 6: Final answer
    x = 11,907.48

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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.