Home / 15,317.60-21,146.33-10,308.15

Finding the Fourth Proportional to 15,317.60, 21,146.33 and 10,308.15

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Solution

The fourth proportional to 15,317.60, 21,146.33 and 10,308.15 is: 14,230.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.60 : 21,146.33 = 10,308.15 : x
  2. Step 2: Convert to fraction form
    15,317.60/21,146.33 = 10,308.15/x
  3. Step 3: Cross multiply
    15,317.60x = 21,146.33 × 10,308.15
  4. Step 4: Simplify right side
    15,317.60x = 217,979,567.36
  5. Step 5: Solve for x
    x = 217,979,567.36/15,317.60
  6. Step 6: Final answer
    x = 14,230.67

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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.