Home / 20,569.87-28,386.96-12,616.48

Finding the Fourth Proportional to 20,569.87, 28,386.96 and 12,616.48

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Solution

The fourth proportional to 20,569.87, 28,386.96 and 12,616.48 is: 17,411.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.87 : 28,386.96 = 12,616.48 : x
  2. Step 2: Convert to fraction form
    20,569.87/28,386.96 = 12,616.48/x
  3. Step 3: Cross multiply
    20,569.87x = 28,386.96 × 12,616.48
  4. Step 4: Simplify right side
    20,569.87x = 358,143,513.10
  5. Step 5: Solve for x
    x = 358,143,513.10/20,569.87
  6. Step 6: Final answer
    x = 17,411.07

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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.