Home / 18,966.96-28,427.40-13,421.93

Finding the Fourth Proportional to 18,966.96, 28,427.40 and 13,421.93

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Solution

The fourth proportional to 18,966.96, 28,427.40 and 13,421.93 is: 20,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.96 : 28,427.40 = 13,421.93 : x
  2. Step 2: Convert to fraction form
    18,966.96/28,427.40 = 13,421.93/x
  3. Step 3: Cross multiply
    18,966.96x = 28,427.40 × 13,421.93
  4. Step 4: Simplify right side
    18,966.96x = 381,550,430.75
  5. Step 5: Solve for x
    x = 381,550,430.75/18,966.96
  6. Step 6: Final answer
    x = 20,116.58

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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.