Home / 31,389.44-47,088-12,926.72

Finding the Fourth Proportional to 31,389.44, 47,088 and 12,926.72

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Solution

The fourth proportional to 31,389.44, 47,088 and 12,926.72 is: 19,391.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.44 : 47,088 = 12,926.72 : x
  2. Step 2: Convert to fraction form
    31,389.44/47,088 = 12,926.72/x
  3. Step 3: Cross multiply
    31,389.44x = 47,088 × 12,926.72
  4. Step 4: Simplify right side
    31,389.44x = 608,693,391.36
  5. Step 5: Solve for x
    x = 608,693,391.36/31,389.44
  6. Step 6: Final answer
    x = 19,391.66

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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.