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Finding the Fourth Proportional to 13,090.86, 18,065.88 and 7,502.94

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Solution

The fourth proportional to 13,090.86, 18,065.88 and 7,502.94 is: 10,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.86 : 18,065.88 = 7,502.94 : x
  2. Step 2: Convert to fraction form
    13,090.86/18,065.88 = 7,502.94/x
  3. Step 3: Cross multiply
    13,090.86x = 18,065.88 × 7,502.94
  4. Step 4: Simplify right side
    13,090.86x = 135,547,213.69
  5. Step 5: Solve for x
    x = 135,547,213.69/13,090.86
  6. Step 6: Final answer
    x = 10,354.34

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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.