Home / 22,990.16-31,727.36-12,918.57

Finding the Fourth Proportional to 22,990.16, 31,727.36 and 12,918.57

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Solution

The fourth proportional to 22,990.16, 31,727.36 and 12,918.57 is: 17,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,990.16 : 31,727.36 = 12,918.57 : x
  2. Step 2: Convert to fraction form
    22,990.16/31,727.36 = 12,918.57/x
  3. Step 3: Cross multiply
    22,990.16x = 31,727.36 × 12,918.57
  4. Step 4: Simplify right side
    22,990.16x = 409,872,212.86
  5. Step 5: Solve for x
    x = 409,872,212.86/22,990.16
  6. Step 6: Final answer
    x = 17,828.16

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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.