Home / 13,315.73-18,376.28-7,347.27

Finding the Fourth Proportional to 13,315.73, 18,376.28 and 7,347.27

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Solution

The fourth proportional to 13,315.73, 18,376.28 and 7,347.27 is: 10,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.73 : 18,376.28 = 7,347.27 : x
  2. Step 2: Convert to fraction form
    13,315.73/18,376.28 = 7,347.27/x
  3. Step 3: Cross multiply
    13,315.73x = 18,376.28 × 7,347.27
  4. Step 4: Simplify right side
    13,315.73x = 135,015,490.76
  5. Step 5: Solve for x
    x = 135,015,490.76/13,315.73
  6. Step 6: Final answer
    x = 10,139.55

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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.