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Finding the Fourth Proportional to 19,409.82, 29,116.55 and 6,931.16

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Solution

The fourth proportional to 19,409.82, 29,116.55 and 6,931.16 is: 10,397.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.82 : 29,116.55 = 6,931.16 : x
  2. Step 2: Convert to fraction form
    19,409.82/29,116.55 = 6,931.16/x
  3. Step 3: Cross multiply
    19,409.82x = 29,116.55 × 6,931.16
  4. Step 4: Simplify right side
    19,409.82x = 201,811,466.70
  5. Step 5: Solve for x
    x = 201,811,466.70/19,409.82
  6. Step 6: Final answer
    x = 10,397.39

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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.