Home / 19,430.85-29,124.21-8,331.84

Finding the Fourth Proportional to 19,430.85, 29,124.21 and 8,331.84

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Solution

The fourth proportional to 19,430.85, 29,124.21 and 8,331.84 is: 12,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.85 : 29,124.21 = 8,331.84 : x
  2. Step 2: Convert to fraction form
    19,430.85/29,124.21 = 8,331.84/x
  3. Step 3: Cross multiply
    19,430.85x = 29,124.21 × 8,331.84
  4. Step 4: Simplify right side
    19,430.85x = 242,658,257.85
  5. Step 5: Solve for x
    x = 242,658,257.85/19,430.85
  6. Step 6: Final answer
    x = 12,488.30

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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.