Home / 20,298.24-28,011.36-11,913.12

Finding the Fourth Proportional to 20,298.24, 28,011.36 and 11,913.12

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Solution

The fourth proportional to 20,298.24, 28,011.36 and 11,913.12 is: 16,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.24 : 28,011.36 = 11,913.12 : x
  2. Step 2: Convert to fraction form
    20,298.24/28,011.36 = 11,913.12/x
  3. Step 3: Cross multiply
    20,298.24x = 28,011.36 × 11,913.12
  4. Step 4: Simplify right side
    20,298.24x = 333,702,693.04
  5. Step 5: Solve for x
    x = 333,702,693.04/20,298.24
  6. Step 6: Final answer
    x = 16,439.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.