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Finding the Fourth Proportional to 32,987.16, 45,520.32 and 19,559.68

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Solution

The fourth proportional to 32,987.16, 45,520.32 and 19,559.68 is: 26,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,987.16 : 45,520.32 = 19,559.68 : x
  2. Step 2: Convert to fraction form
    32,987.16/45,520.32 = 19,559.68/x
  3. Step 3: Cross multiply
    32,987.16x = 45,520.32 × 19,559.68
  4. Step 4: Simplify right side
    32,987.16x = 890,362,892.70
  5. Step 5: Solve for x
    x = 890,362,892.70/32,987.16
  6. Step 6: Final answer
    x = 26,991.20

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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.