Home / 20,345.94-30,448.14-12,445.02

Finding the Fourth Proportional to 20,345.94, 30,448.14 and 12,445.02

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Solution

The fourth proportional to 20,345.94, 30,448.14 and 12,445.02 is: 18,624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.94 : 30,448.14 = 12,445.02 : x
  2. Step 2: Convert to fraction form
    20,345.94/30,448.14 = 12,445.02/x
  3. Step 3: Cross multiply
    20,345.94x = 30,448.14 × 12,445.02
  4. Step 4: Simplify right side
    20,345.94x = 378,927,711.26
  5. Step 5: Solve for x
    x = 378,927,711.26/20,345.94
  6. Step 6: Final answer
    x = 18,624.24

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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.