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Finding the Fourth Proportional to 19,487.04, 29,210.04 and 8,391.12

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Solution

The fourth proportional to 19,487.04, 29,210.04 and 8,391.12 is: 12,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.04 : 29,210.04 = 8,391.12 : x
  2. Step 2: Convert to fraction form
    19,487.04/29,210.04 = 8,391.12/x
  3. Step 3: Cross multiply
    19,487.04x = 29,210.04 × 8,391.12
  4. Step 4: Simplify right side
    19,487.04x = 245,104,950.84
  5. Step 5: Solve for x
    x = 245,104,950.84/19,487.04
  6. Step 6: Final answer
    x = 12,577.84

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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.