Home / 31,106.75-46,646.40-8,915.09

Finding the Fourth Proportional to 31,106.75, 46,646.40 and 8,915.09

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Solution

The fourth proportional to 31,106.75, 46,646.40 and 8,915.09 is: 13,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,106.75 : 46,646.40 = 8,915.09 : x
  2. Step 2: Convert to fraction form
    31,106.75/46,646.40 = 8,915.09/x
  3. Step 3: Cross multiply
    31,106.75x = 46,646.40 × 8,915.09
  4. Step 4: Simplify right side
    31,106.75x = 415,856,854.18
  5. Step 5: Solve for x
    x = 415,856,854.18/31,106.75
  6. Step 6: Final answer
    x = 13,368.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.