Home / 20,362.34-30,532.40-6,128.74

Finding the Fourth Proportional to 20,362.34, 30,532.40 and 6,128.74

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Solution

The fourth proportional to 20,362.34, 30,532.40 and 6,128.74 is: 9,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.34 : 30,532.40 = 6,128.74 : x
  2. Step 2: Convert to fraction form
    20,362.34/30,532.40 = 6,128.74/x
  3. Step 3: Cross multiply
    20,362.34x = 30,532.40 × 6,128.74
  4. Step 4: Simplify right side
    20,362.34x = 187,125,141.18
  5. Step 5: Solve for x
    x = 187,125,141.18/20,362.34
  6. Step 6: Final answer
    x = 9,189.77

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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.