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Finding the Fourth Proportional to 15,461.22, 21,336.48 and 8,746.71

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Solution

The fourth proportional to 15,461.22, 21,336.48 and 8,746.71 is: 12,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.22 : 21,336.48 = 8,746.71 : x
  2. Step 2: Convert to fraction form
    15,461.22/21,336.48 = 8,746.71/x
  3. Step 3: Cross multiply
    15,461.22x = 21,336.48 × 8,746.71
  4. Step 4: Simplify right side
    15,461.22x = 186,624,002.98
  5. Step 5: Solve for x
    x = 186,624,002.98/15,461.22
  6. Step 6: Final answer
    x = 12,070.46

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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.