Home / 10,603.89-15,905.45-4,281.51

Finding the Fourth Proportional to 10,603.89, 15,905.45 and 4,281.51

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Solution

The fourth proportional to 10,603.89, 15,905.45 and 4,281.51 is: 6,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.89 : 15,905.45 = 4,281.51 : x
  2. Step 2: Convert to fraction form
    10,603.89/15,905.45 = 4,281.51/x
  3. Step 3: Cross multiply
    10,603.89x = 15,905.45 × 4,281.51
  4. Step 4: Simplify right side
    10,603.89x = 68,099,321.82
  5. Step 5: Solve for x
    x = 68,099,321.82/10,603.89
  6. Step 6: Final answer
    x = 6,422.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.