Home / 20,507.42-28,302.34-12,554.90

Finding the Fourth Proportional to 20,507.42, 28,302.34 and 12,554.90

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Solution

The fourth proportional to 20,507.42, 28,302.34 and 12,554.90 is: 17,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.42 : 28,302.34 = 12,554.90 : x
  2. Step 2: Convert to fraction form
    20,507.42/28,302.34 = 12,554.90/x
  3. Step 3: Cross multiply
    20,507.42x = 28,302.34 × 12,554.90
  4. Step 4: Simplify right side
    20,507.42x = 355,333,048.47
  5. Step 5: Solve for x
    x = 355,333,048.47/20,507.42
  6. Step 6: Final answer
    x = 17,327.05

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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.