Home / 21,923.57-30,247.12-12,485.45

Finding the Fourth Proportional to 21,923.57, 30,247.12 and 12,485.45

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Solution

The fourth proportional to 21,923.57, 30,247.12 and 12,485.45 is: 17,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.57 : 30,247.12 = 12,485.45 : x
  2. Step 2: Convert to fraction form
    21,923.57/30,247.12 = 12,485.45/x
  3. Step 3: Cross multiply
    21,923.57x = 30,247.12 × 12,485.45
  4. Step 4: Simplify right side
    21,923.57x = 377,648,721.95
  5. Step 5: Solve for x
    x = 377,648,721.95/21,923.57
  6. Step 6: Final answer
    x = 17,225.70

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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.