Home / 28,715.10-39,624.03-16,139.58

Finding the Fourth Proportional to 28,715.10, 39,624.03 and 16,139.58

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Solution

The fourth proportional to 28,715.10, 39,624.03 and 16,139.58 is: 22,271.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.10 : 39,624.03 = 16,139.58 : x
  2. Step 2: Convert to fraction form
    28,715.10/39,624.03 = 16,139.58/x
  3. Step 3: Cross multiply
    28,715.10x = 39,624.03 × 16,139.58
  4. Step 4: Simplify right side
    28,715.10x = 639,515,202.11
  5. Step 5: Solve for x
    x = 639,515,202.11/28,715.10
  6. Step 6: Final answer
    x = 22,271.04

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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.