Home / 13,228.28-18,248.53-9,637.65

Finding the Fourth Proportional to 13,228.28, 18,248.53 and 9,637.65

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Solution

The fourth proportional to 13,228.28, 18,248.53 and 9,637.65 is: 13,295.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.28 : 18,248.53 = 9,637.65 : x
  2. Step 2: Convert to fraction form
    13,228.28/18,248.53 = 9,637.65/x
  3. Step 3: Cross multiply
    13,228.28x = 18,248.53 × 9,637.65
  4. Step 4: Simplify right side
    13,228.28x = 175,872,989.49
  5. Step 5: Solve for x
    x = 175,872,989.49/13,228.28
  6. Step 6: Final answer
    x = 13,295.22

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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.