Home / 18,953.07-26,123.12-13,289.55

Finding the Fourth Proportional to 18,953.07, 26,123.12 and 13,289.55

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Solution

The fourth proportional to 18,953.07, 26,123.12 and 13,289.55 is: 18,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.07 : 26,123.12 = 13,289.55 : x
  2. Step 2: Convert to fraction form
    18,953.07/26,123.12 = 13,289.55/x
  3. Step 3: Cross multiply
    18,953.07x = 26,123.12 × 13,289.55
  4. Step 4: Simplify right side
    18,953.07x = 347,164,442.95
  5. Step 5: Solve for x
    x = 347,164,442.95/18,953.07
  6. Step 6: Final answer
    x = 18,317.06

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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.