Home / 19,275.89-28,918.10-8,192.05

Finding the Fourth Proportional to 19,275.89, 28,918.10 and 8,192.05

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Solution

The fourth proportional to 19,275.89, 28,918.10 and 8,192.05 is: 12,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.89 : 28,918.10 = 8,192.05 : x
  2. Step 2: Convert to fraction form
    19,275.89/28,918.10 = 8,192.05/x
  3. Step 3: Cross multiply
    19,275.89x = 28,918.10 × 8,192.05
  4. Step 4: Simplify right side
    19,275.89x = 236,898,585.87
  5. Step 5: Solve for x
    x = 236,898,585.87/19,275.89
  6. Step 6: Final answer
    x = 12,289.89

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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.