Home / 21,595.45-29,788.84-15,928.40

Finding the Fourth Proportional to 21,595.45, 29,788.84 and 15,928.40

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Solution

The fourth proportional to 21,595.45, 29,788.84 and 15,928.40 is: 21,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.45 : 29,788.84 = 15,928.40 : x
  2. Step 2: Convert to fraction form
    21,595.45/29,788.84 = 15,928.40/x
  3. Step 3: Cross multiply
    21,595.45x = 29,788.84 × 15,928.40
  4. Step 4: Simplify right side
    21,595.45x = 474,488,559.06
  5. Step 5: Solve for x
    x = 474,488,559.06/21,595.45
  6. Step 6: Final answer
    x = 21,971.69

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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.