Home / 14,003.48-20,999.10-7,428.18

Finding the Fourth Proportional to 14,003.48, 20,999.10 and 7,428.18

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Solution

The fourth proportional to 14,003.48, 20,999.10 and 7,428.18 is: 11,139.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.48 : 20,999.10 = 7,428.18 : x
  2. Step 2: Convert to fraction form
    14,003.48/20,999.10 = 7,428.18/x
  3. Step 3: Cross multiply
    14,003.48x = 20,999.10 × 7,428.18
  4. Step 4: Simplify right side
    14,003.48x = 155,985,094.64
  5. Step 5: Solve for x
    x = 155,985,094.64/14,003.48
  6. Step 6: Final answer
    x = 11,139.02

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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.