Home / 20,465.24-30,632.94-13,428.59

Finding the Fourth Proportional to 20,465.24, 30,632.94 and 13,428.59

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Solution

The fourth proportional to 20,465.24, 30,632.94 and 13,428.59 is: 20,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.24 : 30,632.94 = 13,428.59 : x
  2. Step 2: Convert to fraction form
    20,465.24/30,632.94 = 13,428.59/x
  3. Step 3: Cross multiply
    20,465.24x = 30,632.94 × 13,428.59
  4. Step 4: Simplify right side
    20,465.24x = 411,357,038.59
  5. Step 5: Solve for x
    x = 411,357,038.59/20,465.24
  6. Step 6: Final answer
    x = 20,100.28

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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.