Home / 18,915.61-26,103.31-10,417.55

Finding the Fourth Proportional to 18,915.61, 26,103.31 and 10,417.55

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Solution

The fourth proportional to 18,915.61, 26,103.31 and 10,417.55 is: 14,376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.61 : 26,103.31 = 10,417.55 : x
  2. Step 2: Convert to fraction form
    18,915.61/26,103.31 = 10,417.55/x
  3. Step 3: Cross multiply
    18,915.61x = 26,103.31 × 10,417.55
  4. Step 4: Simplify right side
    18,915.61x = 271,932,537.09
  5. Step 5: Solve for x
    x = 271,932,537.09/18,915.61
  6. Step 6: Final answer
    x = 14,376.09

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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.