Home / 25,788.98-38,681.35-18,261.45

Finding the Fourth Proportional to 25,788.98, 38,681.35 and 18,261.45

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Solution

The fourth proportional to 25,788.98, 38,681.35 and 18,261.45 is: 27,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,788.98 : 38,681.35 = 18,261.45 : x
  2. Step 2: Convert to fraction form
    25,788.98/38,681.35 = 18,261.45/x
  3. Step 3: Cross multiply
    25,788.98x = 38,681.35 × 18,261.45
  4. Step 4: Simplify right side
    25,788.98x = 706,377,493.30
  5. Step 5: Solve for x
    x = 706,377,493.30/25,788.98
  6. Step 6: Final answer
    x = 27,390.67

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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.