Home / 13,428.92-18,526.74-9,900.52

Finding the Fourth Proportional to 13,428.92, 18,526.74 and 9,900.52

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Solution

The fourth proportional to 13,428.92, 18,526.74 and 9,900.52 is: 13,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.92 : 18,526.74 = 9,900.52 : x
  2. Step 2: Convert to fraction form
    13,428.92/18,526.74 = 9,900.52/x
  3. Step 3: Cross multiply
    13,428.92x = 18,526.74 × 9,900.52
  4. Step 4: Simplify right side
    13,428.92x = 183,424,359.90
  5. Step 5: Solve for x
    x = 183,424,359.90/13,428.92
  6. Step 6: Final answer
    x = 13,658.91

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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.