Home / 13,294.42-18,335.12-7,988.21

Finding the Fourth Proportional to 13,294.42, 18,335.12 and 7,988.21

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Solution

The fourth proportional to 13,294.42, 18,335.12 and 7,988.21 is: 11,017.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.42 : 18,335.12 = 7,988.21 : x
  2. Step 2: Convert to fraction form
    13,294.42/18,335.12 = 7,988.21/x
  3. Step 3: Cross multiply
    13,294.42x = 18,335.12 × 7,988.21
  4. Step 4: Simplify right side
    13,294.42x = 146,464,788.94
  5. Step 5: Solve for x
    x = 146,464,788.94/13,294.42
  6. Step 6: Final answer
    x = 11,017.01

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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.