Home / 13,985.76-20,970.48-5,669.76

Finding the Fourth Proportional to 13,985.76, 20,970.48 and 5,669.76

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Solution

The fourth proportional to 13,985.76, 20,970.48 and 5,669.76 is: 8,501.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.76 : 20,970.48 = 5,669.76 : x
  2. Step 2: Convert to fraction form
    13,985.76/20,970.48 = 5,669.76/x
  3. Step 3: Cross multiply
    13,985.76x = 20,970.48 × 5,669.76
  4. Step 4: Simplify right side
    13,985.76x = 118,897,588.68
  5. Step 5: Solve for x
    x = 118,897,588.68/13,985.76
  6. Step 6: Final answer
    x = 8,501.33

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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.