Home / 13,322.57-19,949.70-12,928.40

Finding the Fourth Proportional to 13,322.57, 19,949.70 and 12,928.40

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Solution

The fourth proportional to 13,322.57, 19,949.70 and 12,928.40 is: 19,359.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.57 : 19,949.70 = 12,928.40 : x
  2. Step 2: Convert to fraction form
    13,322.57/19,949.70 = 12,928.40/x
  3. Step 3: Cross multiply
    13,322.57x = 19,949.70 × 12,928.40
  4. Step 4: Simplify right side
    13,322.57x = 257,917,701.48
  5. Step 5: Solve for x
    x = 257,917,701.48/13,322.57
  6. Step 6: Final answer
    x = 19,359.46

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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.