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Finding the Fourth Proportional to 16,421.04, 22,661.10 and 8,969.04

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Solution

The fourth proportional to 16,421.04, 22,661.10 and 8,969.04 is: 12,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,421.04 : 22,661.10 = 8,969.04 : x
  2. Step 2: Convert to fraction form
    16,421.04/22,661.10 = 8,969.04/x
  3. Step 3: Cross multiply
    16,421.04x = 22,661.10 × 8,969.04
  4. Step 4: Simplify right side
    16,421.04x = 203,248,312.34
  5. Step 5: Solve for x
    x = 203,248,312.34/16,421.04
  6. Step 6: Final answer
    x = 12,377.31

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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.