Home / 21,245.76-29,319.48-12,295.08

Finding the Fourth Proportional to 21,245.76, 29,319.48 and 12,295.08

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Solution

The fourth proportional to 21,245.76, 29,319.48 and 12,295.08 is: 16,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.76 : 29,319.48 = 12,295.08 : x
  2. Step 2: Convert to fraction form
    21,245.76/29,319.48 = 12,295.08/x
  3. Step 3: Cross multiply
    21,245.76x = 29,319.48 × 12,295.08
  4. Step 4: Simplify right side
    21,245.76x = 360,485,352.16
  5. Step 5: Solve for x
    x = 360,485,352.16/21,245.76
  6. Step 6: Final answer
    x = 16,967.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.