Home / 10,900.37-15,038.36-6,422.49

Finding the Fourth Proportional to 10,900.37, 15,038.36 and 6,422.49

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Solution

The fourth proportional to 10,900.37, 15,038.36 and 6,422.49 is: 8,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.37 : 15,038.36 = 6,422.49 : x
  2. Step 2: Convert to fraction form
    10,900.37/15,038.36 = 6,422.49/x
  3. Step 3: Cross multiply
    10,900.37x = 15,038.36 × 6,422.49
  4. Step 4: Simplify right side
    10,900.37x = 96,583,708.69
  5. Step 5: Solve for x
    x = 96,583,708.69/10,900.37
  6. Step 6: Final answer
    x = 8,860.59

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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.