Home / 15,900.49-21,942.76-9,935.62

Finding the Fourth Proportional to 15,900.49, 21,942.76 and 9,935.62

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Solution

The fourth proportional to 15,900.49, 21,942.76 and 9,935.62 is: 13,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.49 : 21,942.76 = 9,935.62 : x
  2. Step 2: Convert to fraction form
    15,900.49/21,942.76 = 9,935.62/x
  3. Step 3: Cross multiply
    15,900.49x = 21,942.76 × 9,935.62
  4. Step 4: Simplify right side
    15,900.49x = 218,014,925.11
  5. Step 5: Solve for x
    x = 218,014,925.11/15,900.49
  6. Step 6: Final answer
    x = 13,711.21

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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.