Home / 15,070.33-20,798.90-8,783.11

Finding the Fourth Proportional to 15,070.33, 20,798.90 and 8,783.11

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Solution

The fourth proportional to 15,070.33, 20,798.90 and 8,783.11 is: 12,121.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.33 : 20,798.90 = 8,783.11 : x
  2. Step 2: Convert to fraction form
    15,070.33/20,798.90 = 8,783.11/x
  3. Step 3: Cross multiply
    15,070.33x = 20,798.90 × 8,783.11
  4. Step 4: Simplify right side
    15,070.33x = 182,678,996.54
  5. Step 5: Solve for x
    x = 182,678,996.54/15,070.33
  6. Step 6: Final answer
    x = 12,121.77

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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.