Home / 10,903.09-15,041.77-7,912.30

Finding the Fourth Proportional to 10,903.09, 15,041.77 and 7,912.30

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Solution

The fourth proportional to 10,903.09, 15,041.77 and 7,912.30 is: 10,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.09 : 15,041.77 = 7,912.30 : x
  2. Step 2: Convert to fraction form
    10,903.09/15,041.77 = 7,912.30/x
  3. Step 3: Cross multiply
    10,903.09x = 15,041.77 × 7,912.30
  4. Step 4: Simplify right side
    10,903.09x = 119,014,996.77
  5. Step 5: Solve for x
    x = 119,014,996.77/10,903.09
  6. Step 6: Final answer
    x = 10,915.71

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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.