Home / 21,430.05-32,150.21-8,943.13

Finding the Fourth Proportional to 21,430.05, 32,150.21 and 8,943.13

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Solution

The fourth proportional to 21,430.05, 32,150.21 and 8,943.13 is: 13,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.05 : 32,150.21 = 8,943.13 : x
  2. Step 2: Convert to fraction form
    21,430.05/32,150.21 = 8,943.13/x
  3. Step 3: Cross multiply
    21,430.05x = 32,150.21 × 8,943.13
  4. Step 4: Simplify right side
    21,430.05x = 287,523,507.56
  5. Step 5: Solve for x
    x = 287,523,507.56/21,430.05
  6. Step 6: Final answer
    x = 13,416.84

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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.