Home / 21,935.92-30,271.82-13,319.60

Finding the Fourth Proportional to 21,935.92, 30,271.82 and 13,319.60

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Solution

The fourth proportional to 21,935.92, 30,271.82 and 13,319.60 is: 18,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.92 : 30,271.82 = 13,319.60 : x
  2. Step 2: Convert to fraction form
    21,935.92/30,271.82 = 13,319.60/x
  3. Step 3: Cross multiply
    21,935.92x = 30,271.82 × 13,319.60
  4. Step 4: Simplify right side
    21,935.92x = 403,208,533.67
  5. Step 5: Solve for x
    x = 403,208,533.67/21,935.92
  6. Step 6: Final answer
    x = 18,381.20

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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.