Home / 19,148.40-28,720.98-8,054.64

Finding the Fourth Proportional to 19,148.40, 28,720.98 and 8,054.64

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Solution

The fourth proportional to 19,148.40, 28,720.98 and 8,054.64 is: 12,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,148.40 : 28,720.98 = 8,054.64 : x
  2. Step 2: Convert to fraction form
    19,148.40/28,720.98 = 8,054.64/x
  3. Step 3: Cross multiply
    19,148.40x = 28,720.98 × 8,054.64
  4. Step 4: Simplify right side
    19,148.40x = 231,337,154.35
  5. Step 5: Solve for x
    x = 231,337,154.35/19,148.40
  6. Step 6: Final answer
    x = 12,081.28

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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.