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Finding the Fourth Proportional to 12,569.79, 18,854.40 and 6,328.13

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Solution

The fourth proportional to 12,569.79, 18,854.40 and 6,328.13 is: 9,492.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,569.79 : 18,854.40 = 6,328.13 : x
  2. Step 2: Convert to fraction form
    12,569.79/18,854.40 = 6,328.13/x
  3. Step 3: Cross multiply
    12,569.79x = 18,854.40 × 6,328.13
  4. Step 4: Simplify right side
    12,569.79x = 119,313,094.27
  5. Step 5: Solve for x
    x = 119,313,094.27/12,569.79
  6. Step 6: Final answer
    x = 9,492.05

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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.