Home / 13,715.84-18,927.82-7,428.20

Finding the Fourth Proportional to 13,715.84, 18,927.82 and 7,428.20

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Solution

The fourth proportional to 13,715.84, 18,927.82 and 7,428.20 is: 10,250.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.84 : 18,927.82 = 7,428.20 : x
  2. Step 2: Convert to fraction form
    13,715.84/18,927.82 = 7,428.20/x
  3. Step 3: Cross multiply
    13,715.84x = 18,927.82 × 7,428.20
  4. Step 4: Simplify right side
    13,715.84x = 140,599,632.52
  5. Step 5: Solve for x
    x = 140,599,632.52/13,715.84
  6. Step 6: Final answer
    x = 10,250.89

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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.