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Finding the Fourth Proportional to 13,057.58, 18,019.47 and 7,089.26

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Solution

The fourth proportional to 13,057.58, 18,019.47 and 7,089.26 is: 9,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.58 : 18,019.47 = 7,089.26 : x
  2. Step 2: Convert to fraction form
    13,057.58/18,019.47 = 7,089.26/x
  3. Step 3: Cross multiply
    13,057.58x = 18,019.47 × 7,089.26
  4. Step 4: Simplify right side
    13,057.58x = 127,744,617.79
  5. Step 5: Solve for x
    x = 127,744,617.79/13,057.58
  6. Step 6: Final answer
    x = 9,783.18

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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.