Home / 31,878.63-47,776.23-13,136.85

Finding the Fourth Proportional to 31,878.63, 47,776.23 and 13,136.85

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Solution

The fourth proportional to 31,878.63, 47,776.23 and 13,136.85 is: 19,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.63 : 47,776.23 = 13,136.85 : x
  2. Step 2: Convert to fraction form
    31,878.63/47,776.23 = 13,136.85/x
  3. Step 3: Cross multiply
    31,878.63x = 47,776.23 × 13,136.85
  4. Step 4: Simplify right side
    31,878.63x = 627,629,167.08
  5. Step 5: Solve for x
    x = 627,629,167.08/31,878.63
  6. Step 6: Final answer
    x = 19,688.08

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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.