Home / 19,312.70-28,924.09-18,780.66

Finding the Fourth Proportional to 19,312.70, 28,924.09 and 18,780.66

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Solution

The fourth proportional to 19,312.70, 28,924.09 and 18,780.66 is: 28,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.70 : 28,924.09 = 18,780.66 : x
  2. Step 2: Convert to fraction form
    19,312.70/28,924.09 = 18,780.66/x
  3. Step 3: Cross multiply
    19,312.70x = 28,924.09 × 18,780.66
  4. Step 4: Simplify right side
    19,312.70x = 543,213,406.20
  5. Step 5: Solve for x
    x = 543,213,406.20/19,312.70
  6. Step 6: Final answer
    x = 28,127.27

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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.