Home / 21,631.23-32,421.40-9,771.15

Finding the Fourth Proportional to 21,631.23, 32,421.40 and 9,771.15

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Solution

The fourth proportional to 21,631.23, 32,421.40 and 9,771.15 is: 14,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.23 : 32,421.40 = 9,771.15 : x
  2. Step 2: Convert to fraction form
    21,631.23/32,421.40 = 9,771.15/x
  3. Step 3: Cross multiply
    21,631.23x = 32,421.40 × 9,771.15
  4. Step 4: Simplify right side
    21,631.23x = 316,794,313.75
  5. Step 5: Solve for x
    x = 316,794,313.75/21,631.23
  6. Step 6: Final answer
    x = 14,645.23

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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.