Home / 10,438.89-15,647.40-4,887.77

Finding the Fourth Proportional to 10,438.89, 15,647.40 and 4,887.77

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Solution

The fourth proportional to 10,438.89, 15,647.40 and 4,887.77 is: 7,326.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.89 : 15,647.40 = 4,887.77 : x
  2. Step 2: Convert to fraction form
    10,438.89/15,647.40 = 4,887.77/x
  3. Step 3: Cross multiply
    10,438.89x = 15,647.40 × 4,887.77
  4. Step 4: Simplify right side
    10,438.89x = 76,480,814.06
  5. Step 5: Solve for x
    x = 76,480,814.06/10,438.89
  6. Step 6: Final answer
    x = 7,326.53

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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.