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Finding the Fourth Proportional to 25,909.96, 35,772.96 and 19,931.08

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Solution

The fourth proportional to 25,909.96, 35,772.96 and 19,931.08 is: 27,518.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,909.96 : 35,772.96 = 19,931.08 : x
  2. Step 2: Convert to fraction form
    25,909.96/35,772.96 = 19,931.08/x
  3. Step 3: Cross multiply
    25,909.96x = 35,772.96 × 19,931.08
  4. Step 4: Simplify right side
    25,909.96x = 712,993,727.60
  5. Step 5: Solve for x
    x = 712,993,727.60/25,909.96
  6. Step 6: Final answer
    x = 27,518.13

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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.