Home / 30,206.61-45,338.75-18,542.61

Finding the Fourth Proportional to 30,206.61, 45,338.75 and 18,542.61

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Solution

The fourth proportional to 30,206.61, 45,338.75 and 18,542.61 is: 27,831.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,206.61 : 45,338.75 = 18,542.61 : x
  2. Step 2: Convert to fraction form
    30,206.61/45,338.75 = 18,542.61/x
  3. Step 3: Cross multiply
    30,206.61x = 45,338.75 × 18,542.61
  4. Step 4: Simplify right side
    30,206.61x = 840,698,666.42
  5. Step 5: Solve for x
    x = 840,698,666.42/30,206.61
  6. Step 6: Final answer
    x = 27,831.61

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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.