Home / 19,440.90-26,814.24-12,715.74

Finding the Fourth Proportional to 19,440.90, 26,814.24 and 12,715.74

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Solution

The fourth proportional to 19,440.90, 26,814.24 and 12,715.74 is: 17,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,440.90 : 26,814.24 = 12,715.74 : x
  2. Step 2: Convert to fraction form
    19,440.90/26,814.24 = 12,715.74/x
  3. Step 3: Cross multiply
    19,440.90x = 26,814.24 × 12,715.74
  4. Step 4: Simplify right side
    19,440.90x = 340,962,904.14
  5. Step 5: Solve for x
    x = 340,962,904.14/19,440.90
  6. Step 6: Final answer
    x = 17,538.43

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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.