Home / 13,403.80-18,515.28-10,298.80

Finding the Fourth Proportional to 13,403.80, 18,515.28 and 10,298.80

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Solution

The fourth proportional to 13,403.80, 18,515.28 and 10,298.80 is: 14,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.80 : 18,515.28 = 10,298.80 : x
  2. Step 2: Convert to fraction form
    13,403.80/18,515.28 = 10,298.80/x
  3. Step 3: Cross multiply
    13,403.80x = 18,515.28 × 10,298.80
  4. Step 4: Simplify right side
    13,403.80x = 190,685,165.66
  5. Step 5: Solve for x
    x = 190,685,165.66/13,403.80
  6. Step 6: Final answer
    x = 14,226.20

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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.