Home / 18,935.58-26,126.91-12,643.50

Finding the Fourth Proportional to 18,935.58, 26,126.91 and 12,643.50

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Solution

The fourth proportional to 18,935.58, 26,126.91 and 12,643.50 is: 17,445.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.58 : 26,126.91 = 12,643.50 : x
  2. Step 2: Convert to fraction form
    18,935.58/26,126.91 = 12,643.50/x
  3. Step 3: Cross multiply
    18,935.58x = 26,126.91 × 12,643.50
  4. Step 4: Simplify right side
    18,935.58x = 330,335,586.59
  5. Step 5: Solve for x
    x = 330,335,586.59/18,935.58
  6. Step 6: Final answer
    x = 17,445.23

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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.