Home / 20,735.24-28,614.18-12,666.12

Finding the Fourth Proportional to 20,735.24, 28,614.18 and 12,666.12

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Solution

The fourth proportional to 20,735.24, 28,614.18 and 12,666.12 is: 17,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.24 : 28,614.18 = 12,666.12 : x
  2. Step 2: Convert to fraction form
    20,735.24/28,614.18 = 12,666.12/x
  3. Step 3: Cross multiply
    20,735.24x = 28,614.18 × 12,666.12
  4. Step 4: Simplify right side
    20,735.24x = 362,430,637.58
  5. Step 5: Solve for x
    x = 362,430,637.58/20,735.24
  6. Step 6: Final answer
    x = 17,478.97

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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.