Home / 15,090.40-20,818.11-9,426.07

Finding the Fourth Proportional to 15,090.40, 20,818.11 and 9,426.07

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Solution

The fourth proportional to 15,090.40, 20,818.11 and 9,426.07 is: 13,003.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.40 : 20,818.11 = 9,426.07 : x
  2. Step 2: Convert to fraction form
    15,090.40/20,818.11 = 9,426.07/x
  3. Step 3: Cross multiply
    15,090.40x = 20,818.11 × 9,426.07
  4. Step 4: Simplify right side
    15,090.40x = 196,232,962.13
  5. Step 5: Solve for x
    x = 196,232,962.13/15,090.40
  6. Step 6: Final answer
    x = 13,003.83

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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.