Home / 15,405.85-21,260.05-8,332.25

Finding the Fourth Proportional to 15,405.85, 21,260.05 and 8,332.25

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Solution

The fourth proportional to 15,405.85, 21,260.05 and 8,332.25 is: 11,498.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.85 : 21,260.05 = 8,332.25 : x
  2. Step 2: Convert to fraction form
    15,405.85/21,260.05 = 8,332.25/x
  3. Step 3: Cross multiply
    15,405.85x = 21,260.05 × 8,332.25
  4. Step 4: Simplify right side
    15,405.85x = 177,144,051.61
  5. Step 5: Solve for x
    x = 177,144,051.61/15,405.85
  6. Step 6: Final answer
    x = 11,498.50

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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.