Home / 20,645.28-30,970.70-7,501.41

Finding the Fourth Proportional to 20,645.28, 30,970.70 and 7,501.41

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Solution

The fourth proportional to 20,645.28, 30,970.70 and 7,501.41 is: 11,253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.28 : 30,970.70 = 7,501.41 : x
  2. Step 2: Convert to fraction form
    20,645.28/30,970.70 = 7,501.41/x
  3. Step 3: Cross multiply
    20,645.28x = 30,970.70 × 7,501.41
  4. Step 4: Simplify right side
    20,645.28x = 232,323,726.33
  5. Step 5: Solve for x
    x = 232,323,726.33/20,645.28
  6. Step 6: Final answer
    x = 11,253.12

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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.