Home / 14,069.70-21,104.55-13,421.70

Finding the Fourth Proportional to 14,069.70, 21,104.55 and 13,421.70

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Solution

The fourth proportional to 14,069.70, 21,104.55 and 13,421.70 is: 20,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,069.70 : 21,104.55 = 13,421.70 : x
  2. Step 2: Convert to fraction form
    14,069.70/21,104.55 = 13,421.70/x
  3. Step 3: Cross multiply
    14,069.70x = 21,104.55 × 13,421.70
  4. Step 4: Simplify right side
    14,069.70x = 283,258,938.74
  5. Step 5: Solve for x
    x = 283,258,938.74/14,069.70
  6. Step 6: Final answer
    x = 20,132.55

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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.