Home / 13,281.30-18,330.20-10,089.36

Finding the Fourth Proportional to 13,281.30, 18,330.20 and 10,089.36

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Solution

The fourth proportional to 13,281.30, 18,330.20 and 10,089.36 is: 13,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.30 : 18,330.20 = 10,089.36 : x
  2. Step 2: Convert to fraction form
    13,281.30/18,330.20 = 10,089.36/x
  3. Step 3: Cross multiply
    13,281.30x = 18,330.20 × 10,089.36
  4. Step 4: Simplify right side
    13,281.30x = 184,939,974.06
  5. Step 5: Solve for x
    x = 184,939,974.06/13,281.30
  6. Step 6: Final answer
    x = 13,924.84

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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.