Home / 15,617.64-21,535.68-12,763.68

Finding the Fourth Proportional to 15,617.64, 21,535.68 and 12,763.68

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Solution

The fourth proportional to 15,617.64, 21,535.68 and 12,763.68 is: 17,600.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.64 : 21,535.68 = 12,763.68 : x
  2. Step 2: Convert to fraction form
    15,617.64/21,535.68 = 12,763.68/x
  3. Step 3: Cross multiply
    15,617.64x = 21,535.68 × 12,763.68
  4. Step 4: Simplify right side
    15,617.64x = 274,874,528.10
  5. Step 5: Solve for x
    x = 274,874,528.10/15,617.64
  6. Step 6: Final answer
    x = 17,600.26

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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.