Home / 13,315.59-18,362.40-10,330.35

Finding the Fourth Proportional to 13,315.59, 18,362.40 and 10,330.35

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Solution

The fourth proportional to 13,315.59, 18,362.40 and 10,330.35 is: 14,245.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.59 : 18,362.40 = 10,330.35 : x
  2. Step 2: Convert to fraction form
    13,315.59/18,362.40 = 10,330.35/x
  3. Step 3: Cross multiply
    13,315.59x = 18,362.40 × 10,330.35
  4. Step 4: Simplify right side
    13,315.59x = 189,690,018.84
  5. Step 5: Solve for x
    x = 189,690,018.84/13,315.59
  6. Step 6: Final answer
    x = 14,245.71

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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.