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Finding the Fourth Proportional to 15,077.80, 20,804.04 and 8,703.05

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Solution

The fourth proportional to 15,077.80, 20,804.04 and 8,703.05 is: 12,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.80 : 20,804.04 = 8,703.05 : x
  2. Step 2: Convert to fraction form
    15,077.80/20,804.04 = 8,703.05/x
  3. Step 3: Cross multiply
    15,077.80x = 20,804.04 × 8,703.05
  4. Step 4: Simplify right side
    15,077.80x = 181,058,496.30
  5. Step 5: Solve for x
    x = 181,058,496.30/15,077.80
  6. Step 6: Final answer
    x = 12,008.28

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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.