Home / 20,289.42-30,434.04-7,140.24

Finding the Fourth Proportional to 20,289.42, 30,434.04 and 7,140.24

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Solution

The fourth proportional to 20,289.42, 30,434.04 and 7,140.24 is: 10,710.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.42 : 30,434.04 = 7,140.24 : x
  2. Step 2: Convert to fraction form
    20,289.42/30,434.04 = 7,140.24/x
  3. Step 3: Cross multiply
    20,289.42x = 30,434.04 × 7,140.24
  4. Step 4: Simplify right side
    20,289.42x = 217,306,349.77
  5. Step 5: Solve for x
    x = 217,306,349.77/20,289.42
  6. Step 6: Final answer
    x = 10,710.33

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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.