Home / 15,445.95-21,315.52-8,372.42

Finding the Fourth Proportional to 15,445.95, 21,315.52 and 8,372.42

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Solution

The fourth proportional to 15,445.95, 21,315.52 and 8,372.42 is: 11,554.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.95 : 21,315.52 = 8,372.42 : x
  2. Step 2: Convert to fraction form
    15,445.95/21,315.52 = 8,372.42/x
  3. Step 3: Cross multiply
    15,445.95x = 21,315.52 × 8,372.42
  4. Step 4: Simplify right side
    15,445.95x = 178,462,485.96
  5. Step 5: Solve for x
    x = 178,462,485.96/15,445.95
  6. Step 6: Final answer
    x = 11,554.00

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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.