Home / 19,290.96-28,955.88-13,031.28

Finding the Fourth Proportional to 19,290.96, 28,955.88 and 13,031.28

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Solution

The fourth proportional to 19,290.96, 28,955.88 and 13,031.28 is: 19,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.96 : 28,955.88 = 13,031.28 : x
  2. Step 2: Convert to fraction form
    19,290.96/28,955.88 = 13,031.28/x
  3. Step 3: Cross multiply
    19,290.96x = 28,955.88 × 13,031.28
  4. Step 4: Simplify right side
    19,290.96x = 377,332,179.93
  5. Step 5: Solve for x
    x = 377,332,179.93/19,290.96
  6. Step 6: Final answer
    x = 19,560.05

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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.