Home / 13,915.01-20,836.26-11,688.72

Finding the Fourth Proportional to 13,915.01, 20,836.26 and 11,688.72

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Solution

The fourth proportional to 13,915.01, 20,836.26 and 11,688.72 is: 17,502.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.01 : 20,836.26 = 11,688.72 : x
  2. Step 2: Convert to fraction form
    13,915.01/20,836.26 = 11,688.72/x
  3. Step 3: Cross multiply
    13,915.01x = 20,836.26 × 11,688.72
  4. Step 4: Simplify right side
    13,915.01x = 243,549,208.99
  5. Step 5: Solve for x
    x = 243,549,208.99/13,915.01
  6. Step 6: Final answer
    x = 17,502.63

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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.