Home / 20,406.76-30,606.54-5,612.11

Finding the Fourth Proportional to 20,406.76, 30,606.54 and 5,612.11

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Solution

The fourth proportional to 20,406.76, 30,606.54 and 5,612.11 is: 8,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.76 : 30,606.54 = 5,612.11 : x
  2. Step 2: Convert to fraction form
    20,406.76/30,606.54 = 5,612.11/x
  3. Step 3: Cross multiply
    20,406.76x = 30,606.54 × 5,612.11
  4. Step 4: Simplify right side
    20,406.76x = 171,767,269.20
  5. Step 5: Solve for x
    x = 171,767,269.20/20,406.76
  6. Step 6: Final answer
    x = 8,417.17

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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.