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Finding the Fourth Proportional to 12,916.60, 19,346.10 and 10,612.60

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Solution

The fourth proportional to 12,916.60, 19,346.10 and 10,612.60 is: 15,895.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.60 : 19,346.10 = 10,612.60 : x
  2. Step 2: Convert to fraction form
    12,916.60/19,346.10 = 10,612.60/x
  3. Step 3: Cross multiply
    12,916.60x = 19,346.10 × 10,612.60
  4. Step 4: Simplify right side
    12,916.60x = 205,312,420.86
  5. Step 5: Solve for x
    x = 205,312,420.86/12,916.60
  6. Step 6: Final answer
    x = 15,895.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.