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Finding the Fourth Proportional to 15,403.00, 21,256.06 and 8,329.40

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Solution

The fourth proportional to 15,403.00, 21,256.06 and 8,329.40 is: 11,494.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.00 : 21,256.06 = 8,329.40 : x
  2. Step 2: Convert to fraction form
    15,403.00/21,256.06 = 8,329.40/x
  3. Step 3: Cross multiply
    15,403.00x = 21,256.06 × 8,329.40
  4. Step 4: Simplify right side
    15,403.00x = 177,050,184.52
  5. Step 5: Solve for x
    x = 177,050,184.52/15,403.00
  6. Step 6: Final answer
    x = 11,494.53

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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.