Home / 13,790.30-19,031.04-8,488.17

Finding the Fourth Proportional to 13,790.30, 19,031.04 and 8,488.17

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Solution

The fourth proportional to 13,790.30, 19,031.04 and 8,488.17 is: 11,713.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.30 : 19,031.04 = 8,488.17 : x
  2. Step 2: Convert to fraction form
    13,790.30/19,031.04 = 8,488.17/x
  3. Step 3: Cross multiply
    13,790.30x = 19,031.04 × 8,488.17
  4. Step 4: Simplify right side
    13,790.30x = 161,538,702.80
  5. Step 5: Solve for x
    x = 161,538,702.80/13,790.30
  6. Step 6: Final answer
    x = 11,713.94

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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.