Home / 14,362.12-21,539.58-5,128.20

Finding the Fourth Proportional to 14,362.12, 21,539.58 and 5,128.20

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Solution

The fourth proportional to 14,362.12, 21,539.58 and 5,128.20 is: 7,691.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,362.12 : 21,539.58 = 5,128.20 : x
  2. Step 2: Convert to fraction form
    14,362.12/21,539.58 = 5,128.20/x
  3. Step 3: Cross multiply
    14,362.12x = 21,539.58 × 5,128.20
  4. Step 4: Simplify right side
    14,362.12x = 110,459,274.16
  5. Step 5: Solve for x
    x = 110,459,274.16/14,362.12
  6. Step 6: Final answer
    x = 7,691.01

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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.