Home / 13,780.98-19,017.90-7,493.40

Finding the Fourth Proportional to 13,780.98, 19,017.90 and 7,493.40

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Solution

The fourth proportional to 13,780.98, 19,017.90 and 7,493.40 is: 10,340.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.98 : 19,017.90 = 7,493.40 : x
  2. Step 2: Convert to fraction form
    13,780.98/19,017.90 = 7,493.40/x
  3. Step 3: Cross multiply
    13,780.98x = 19,017.90 × 7,493.40
  4. Step 4: Simplify right side
    13,780.98x = 142,508,731.86
  5. Step 5: Solve for x
    x = 142,508,731.86/13,780.98
  6. Step 6: Final answer
    x = 10,340.97

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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.