Home / 21,631.08-32,459.58-7,781.16

Finding the Fourth Proportional to 21,631.08, 32,459.58 and 7,781.16

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Solution

The fourth proportional to 21,631.08, 32,459.58 and 7,781.16 is: 11,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.08 : 32,459.58 = 7,781.16 : x
  2. Step 2: Convert to fraction form
    21,631.08/32,459.58 = 7,781.16/x
  3. Step 3: Cross multiply
    21,631.08x = 32,459.58 × 7,781.16
  4. Step 4: Simplify right side
    21,631.08x = 252,573,185.51
  5. Step 5: Solve for x
    x = 252,573,185.51/21,631.08
  6. Step 6: Final answer
    x = 11,676.40

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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.