Home / 13,615.48-20,423.22-11,904.76

Finding the Fourth Proportional to 13,615.48, 20,423.22 and 11,904.76

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Solution

The fourth proportional to 13,615.48, 20,423.22 and 11,904.76 is: 17,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.48 : 20,423.22 = 11,904.76 : x
  2. Step 2: Convert to fraction form
    13,615.48/20,423.22 = 11,904.76/x
  3. Step 3: Cross multiply
    13,615.48x = 20,423.22 × 11,904.76
  4. Step 4: Simplify right side
    13,615.48x = 243,133,532.53
  5. Step 5: Solve for x
    x = 243,133,532.53/13,615.48
  6. Step 6: Final answer
    x = 17,857.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.