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Finding the Fourth Proportional to 25,758.40, 38,637.60 and 17,809.60

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Solution

The fourth proportional to 25,758.40, 38,637.60 and 17,809.60 is: 26,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,758.40 : 38,637.60 = 17,809.60 : x
  2. Step 2: Convert to fraction form
    25,758.40/38,637.60 = 17,809.60/x
  3. Step 3: Cross multiply
    25,758.40x = 38,637.60 × 17,809.60
  4. Step 4: Simplify right side
    25,758.40x = 688,120,200.96
  5. Step 5: Solve for x
    x = 688,120,200.96/25,758.40
  6. Step 6: Final answer
    x = 26,714.40

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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.