Home / 20,953.34-28,915.27-11,393.41

Finding the Fourth Proportional to 20,953.34, 28,915.27 and 11,393.41

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Solution

The fourth proportional to 20,953.34, 28,915.27 and 11,393.41 is: 15,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.34 : 28,915.27 = 11,393.41 : x
  2. Step 2: Convert to fraction form
    20,953.34/28,915.27 = 11,393.41/x
  3. Step 3: Cross multiply
    20,953.34x = 28,915.27 × 11,393.41
  4. Step 4: Simplify right side
    20,953.34x = 329,443,526.37
  5. Step 5: Solve for x
    x = 329,443,526.37/20,953.34
  6. Step 6: Final answer
    x = 15,722.72

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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.