Home / 10,920.99-15,072.59-6,674.51

Finding the Fourth Proportional to 10,920.99, 15,072.59 and 6,674.51

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Solution

The fourth proportional to 10,920.99, 15,072.59 and 6,674.51 is: 9,211.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.99 : 15,072.59 = 6,674.51 : x
  2. Step 2: Convert to fraction form
    10,920.99/15,072.59 = 6,674.51/x
  3. Step 3: Cross multiply
    10,920.99x = 15,072.59 × 6,674.51
  4. Step 4: Simplify right side
    10,920.99x = 100,602,152.68
  5. Step 5: Solve for x
    x = 100,602,152.68/10,920.99
  6. Step 6: Final answer
    x = 9,211.82

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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.