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Finding the Fourth Proportional to 15,606.59, 21,539.07 and 8,894.63

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Solution

The fourth proportional to 15,606.59, 21,539.07 and 8,894.63 is: 12,275.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,606.59 : 21,539.07 = 8,894.63 : x
  2. Step 2: Convert to fraction form
    15,606.59/21,539.07 = 8,894.63/x
  3. Step 3: Cross multiply
    15,606.59x = 21,539.07 × 8,894.63
  4. Step 4: Simplify right side
    15,606.59x = 191,581,950.50
  5. Step 5: Solve for x
    x = 191,581,950.50/15,606.59
  6. Step 6: Final answer
    x = 12,275.71

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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.