Home / 19,420.05-29,130.10-8,319.54

Finding the Fourth Proportional to 19,420.05, 29,130.10 and 8,319.54

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Solution

The fourth proportional to 19,420.05, 29,130.10 and 8,319.54 is: 12,479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.05 : 29,130.10 = 8,319.54 : x
  2. Step 2: Convert to fraction form
    19,420.05/29,130.10 = 8,319.54/x
  3. Step 3: Cross multiply
    19,420.05x = 29,130.10 × 8,319.54
  4. Step 4: Simplify right side
    19,420.05x = 242,349,120.59
  5. Step 5: Solve for x
    x = 242,349,120.59/19,420.05
  6. Step 6: Final answer
    x = 12,479.32

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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.