Home / 15,505.02-21,397.08-8,431.46

Finding the Fourth Proportional to 15,505.02, 21,397.08 and 8,431.46

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Solution

The fourth proportional to 15,505.02, 21,397.08 and 8,431.46 is: 11,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.02 : 21,397.08 = 8,431.46 : x
  2. Step 2: Convert to fraction form
    15,505.02/21,397.08 = 8,431.46/x
  3. Step 3: Cross multiply
    15,505.02x = 21,397.08 × 8,431.46
  4. Step 4: Simplify right side
    15,505.02x = 180,408,624.14
  5. Step 5: Solve for x
    x = 180,408,624.14/15,505.02
  6. Step 6: Final answer
    x = 11,635.50

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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.