Home / 30,998.08-46,495.89-13,221.40

Finding the Fourth Proportional to 30,998.08, 46,495.89 and 13,221.40

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Solution

The fourth proportional to 30,998.08, 46,495.89 and 13,221.40 is: 19,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998.08 : 46,495.89 = 13,221.40 : x
  2. Step 2: Convert to fraction form
    30,998.08/46,495.89 = 13,221.40/x
  3. Step 3: Cross multiply
    30,998.08x = 46,495.89 × 13,221.40
  4. Step 4: Simplify right side
    30,998.08x = 614,740,760.05
  5. Step 5: Solve for x
    x = 614,740,760.05/30,998.08
  6. Step 6: Final answer
    x = 19,831.58

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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.