Home / 22,403.08-30,920.34-12,972.52

Finding the Fourth Proportional to 22,403.08, 30,920.34 and 12,972.52

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Solution

The fourth proportional to 22,403.08, 30,920.34 and 12,972.52 is: 17,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,403.08 : 30,920.34 = 12,972.52 : x
  2. Step 2: Convert to fraction form
    22,403.08/30,920.34 = 12,972.52/x
  3. Step 3: Cross multiply
    22,403.08x = 30,920.34 × 12,972.52
  4. Step 4: Simplify right side
    22,403.08x = 401,114,729.06
  5. Step 5: Solve for x
    x = 401,114,729.06/22,403.08
  6. Step 6: Final answer
    x = 17,904.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.