Home / 15,419.36-21,256.08-11,113.76

Finding the Fourth Proportional to 15,419.36, 21,256.08 and 11,113.76

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Solution

The fourth proportional to 15,419.36, 21,256.08 and 11,113.76 is: 15,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.36 : 21,256.08 = 11,113.76 : x
  2. Step 2: Convert to fraction form
    15,419.36/21,256.08 = 11,113.76/x
  3. Step 3: Cross multiply
    15,419.36x = 21,256.08 × 11,113.76
  4. Step 4: Simplify right side
    15,419.36x = 236,234,971.66
  5. Step 5: Solve for x
    x = 236,234,971.66/15,419.36
  6. Step 6: Final answer
    x = 15,320.67

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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.