Home / 19,004.32-28,484.60-10,220.78

Finding the Fourth Proportional to 19,004.32, 28,484.60 and 10,220.78

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Solution

The fourth proportional to 19,004.32, 28,484.60 and 10,220.78 is: 15,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,004.32 : 28,484.60 = 10,220.78 : x
  2. Step 2: Convert to fraction form
    19,004.32/28,484.60 = 10,220.78/x
  3. Step 3: Cross multiply
    19,004.32x = 28,484.60 × 10,220.78
  4. Step 4: Simplify right side
    19,004.32x = 291,134,850.10
  5. Step 5: Solve for x
    x = 291,134,850.10/19,004.32
  6. Step 6: Final answer
    x = 15,319.40

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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.