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Finding the Fourth Proportional to 21,698.68, 32,522.98 and 9,987.16

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Solution

The fourth proportional to 21,698.68, 32,522.98 and 9,987.16 is: 14,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.68 : 32,522.98 = 9,987.16 : x
  2. Step 2: Convert to fraction form
    21,698.68/32,522.98 = 9,987.16/x
  3. Step 3: Cross multiply
    21,698.68x = 32,522.98 × 9,987.16
  4. Step 4: Simplify right side
    21,698.68x = 324,812,204.94
  5. Step 5: Solve for x
    x = 324,812,204.94/21,698.68
  6. Step 6: Final answer
    x = 14,969.21

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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.