Home / 22,987.93-31,721.38-12,915.58

Finding the Fourth Proportional to 22,987.93, 31,721.38 and 12,915.58

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Solution

The fourth proportional to 22,987.93, 31,721.38 and 12,915.58 is: 17,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.93 : 31,721.38 = 12,915.58 : x
  2. Step 2: Convert to fraction form
    22,987.93/31,721.38 = 12,915.58/x
  3. Step 3: Cross multiply
    22,987.93x = 31,721.38 × 12,915.58
  4. Step 4: Simplify right side
    22,987.93x = 409,700,021.10
  5. Step 5: Solve for x
    x = 409,700,021.10/22,987.93
  6. Step 6: Final answer
    x = 17,822.40

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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.