Home / 19,270.08-28,905.12-5,417.28

Finding the Fourth Proportional to 19,270.08, 28,905.12 and 5,417.28

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Solution

The fourth proportional to 19,270.08, 28,905.12 and 5,417.28 is: 8,125.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.08 : 28,905.12 = 5,417.28 : x
  2. Step 2: Convert to fraction form
    19,270.08/28,905.12 = 5,417.28/x
  3. Step 3: Cross multiply
    19,270.08x = 28,905.12 × 5,417.28
  4. Step 4: Simplify right side
    19,270.08x = 156,587,128.47
  5. Step 5: Solve for x
    x = 156,587,128.47/19,270.08
  6. Step 6: Final answer
    x = 8,125.92

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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.