Home / 13,266.68-18,308.20-7,298.40

Finding the Fourth Proportional to 13,266.68, 18,308.20 and 7,298.40

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Solution

The fourth proportional to 13,266.68, 18,308.20 and 7,298.40 is: 10,071.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.68 : 18,308.20 = 7,298.40 : x
  2. Step 2: Convert to fraction form
    13,266.68/18,308.20 = 7,298.40/x
  3. Step 3: Cross multiply
    13,266.68x = 18,308.20 × 7,298.40
  4. Step 4: Simplify right side
    13,266.68x = 133,620,566.88
  5. Step 5: Solve for x
    x = 133,620,566.88/13,266.68
  6. Step 6: Final answer
    x = 10,071.89

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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.