Home / 22,759.16-31,407.78-12,688.24

Finding the Fourth Proportional to 22,759.16, 31,407.78 and 12,688.24

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Solution

The fourth proportional to 22,759.16, 31,407.78 and 12,688.24 is: 17,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,759.16 : 31,407.78 = 12,688.24 : x
  2. Step 2: Convert to fraction form
    22,759.16/31,407.78 = 12,688.24/x
  3. Step 3: Cross multiply
    22,759.16x = 31,407.78 × 12,688.24
  4. Step 4: Simplify right side
    22,759.16x = 398,509,450.51
  5. Step 5: Solve for x
    x = 398,509,450.51/22,759.16
  6. Step 6: Final answer
    x = 17,509.85

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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.