Home / 28,304.40-42,429.60-10,530.30

Finding the Fourth Proportional to 28,304.40, 42,429.60 and 10,530.30

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Solution

The fourth proportional to 28,304.40, 42,429.60 and 10,530.30 is: 15,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,304.40 : 42,429.60 = 10,530.30 : x
  2. Step 2: Convert to fraction form
    28,304.40/42,429.60 = 10,530.30/x
  3. Step 3: Cross multiply
    28,304.40x = 42,429.60 × 10,530.30
  4. Step 4: Simplify right side
    28,304.40x = 446,796,416.88
  5. Step 5: Solve for x
    x = 446,796,416.88/28,304.40
  6. Step 6: Final answer
    x = 15,785.40

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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.