Home / 13,931.02-20,896.54-6,915.88

Finding the Fourth Proportional to 13,931.02, 20,896.54 and 6,915.88

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Solution

The fourth proportional to 13,931.02, 20,896.54 and 6,915.88 is: 10,373.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.02 : 20,896.54 = 6,915.88 : x
  2. Step 2: Convert to fraction form
    13,931.02/20,896.54 = 6,915.88/x
  3. Step 3: Cross multiply
    13,931.02x = 20,896.54 × 6,915.88
  4. Step 4: Simplify right side
    13,931.02x = 144,517,963.06
  5. Step 5: Solve for x
    x = 144,517,963.06/13,931.02
  6. Step 6: Final answer
    x = 10,373.82

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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.