Home / 20,011.28-30,018.44-5,970.21

Finding the Fourth Proportional to 20,011.28, 30,018.44 and 5,970.21

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Solution

The fourth proportional to 20,011.28, 30,018.44 and 5,970.21 is: 8,955.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.28 : 30,018.44 = 5,970.21 : x
  2. Step 2: Convert to fraction form
    20,011.28/30,018.44 = 5,970.21/x
  3. Step 3: Cross multiply
    20,011.28x = 30,018.44 × 5,970.21
  4. Step 4: Simplify right side
    20,011.28x = 179,216,390.67
  5. Step 5: Solve for x
    x = 179,216,390.67/20,011.28
  6. Step 6: Final answer
    x = 8,955.77

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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.