Home / 22,715.63-31,347.66-12,779.63

Finding the Fourth Proportional to 22,715.63, 31,347.66 and 12,779.63

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Solution

The fourth proportional to 22,715.63, 31,347.66 and 12,779.63 is: 17,635.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.63 : 31,347.66 = 12,779.63 : x
  2. Step 2: Convert to fraction form
    22,715.63/31,347.66 = 12,779.63/x
  3. Step 3: Cross multiply
    22,715.63x = 31,347.66 × 12,779.63
  4. Step 4: Simplify right side
    22,715.63x = 400,611,339.43
  5. Step 5: Solve for x
    x = 400,611,339.43/22,715.63
  6. Step 6: Final answer
    x = 17,635.94

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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.