Home / 10,901.09-15,039.02-7,910.30

Finding the Fourth Proportional to 10,901.09, 15,039.02 and 7,910.30

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Solution

The fourth proportional to 10,901.09, 15,039.02 and 7,910.30 is: 10,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,901.09 : 15,039.02 = 7,910.30 : x
  2. Step 2: Convert to fraction form
    10,901.09/15,039.02 = 7,910.30/x
  3. Step 3: Cross multiply
    10,901.09x = 15,039.02 × 7,910.30
  4. Step 4: Simplify right side
    10,901.09x = 118,963,045.16
  5. Step 5: Solve for x
    x = 118,963,045.16/10,901.09
  6. Step 6: Final answer
    x = 10,912.95

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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.