Home / 20,915.02-31,371.36-15,298.45

Finding the Fourth Proportional to 20,915.02, 31,371.36 and 15,298.45

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Solution

The fourth proportional to 20,915.02, 31,371.36 and 15,298.45 is: 22,946.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.02 : 31,371.36 = 15,298.45 : x
  2. Step 2: Convert to fraction form
    20,915.02/31,371.36 = 15,298.45/x
  3. Step 3: Cross multiply
    20,915.02x = 31,371.36 × 15,298.45
  4. Step 4: Simplify right side
    20,915.02x = 479,933,182.39
  5. Step 5: Solve for x
    x = 479,933,182.39/20,915.02
  6. Step 6: Final answer
    x = 22,946.82

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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.