Home / 13,298.96-18,219.49-12,800.40

Finding the Fourth Proportional to 13,298.96, 18,219.49 and 12,800.40

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Solution

The fourth proportional to 13,298.96, 18,219.49 and 12,800.40 is: 17,536.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.96 : 18,219.49 = 12,800.40 : x
  2. Step 2: Convert to fraction form
    13,298.96/18,219.49 = 12,800.40/x
  3. Step 3: Cross multiply
    13,298.96x = 18,219.49 × 12,800.40
  4. Step 4: Simplify right side
    13,298.96x = 233,216,759.80
  5. Step 5: Solve for x
    x = 233,216,759.80/13,298.96
  6. Step 6: Final answer
    x = 17,536.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.