Home / 30,006.20-45,009.30-15,209.40

Finding the Fourth Proportional to 30,006.20, 45,009.30 and 15,209.40

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Solution

The fourth proportional to 30,006.20, 45,009.30 and 15,209.40 is: 22,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,006.20 : 45,009.30 = 15,209.40 : x
  2. Step 2: Convert to fraction form
    30,006.20/45,009.30 = 15,209.40/x
  3. Step 3: Cross multiply
    30,006.20x = 45,009.30 × 15,209.40
  4. Step 4: Simplify right side
    30,006.20x = 684,564,447.42
  5. Step 5: Solve for x
    x = 684,564,447.42/30,006.20
  6. Step 6: Final answer
    x = 22,814.10

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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.