Home / 18,779.45-25,915.64-10,395.95

Finding the Fourth Proportional to 18,779.45, 25,915.64 and 10,395.95

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Solution

The fourth proportional to 18,779.45, 25,915.64 and 10,395.95 is: 14,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.45 : 25,915.64 = 10,395.95 : x
  2. Step 2: Convert to fraction form
    18,779.45/25,915.64 = 10,395.95/x
  3. Step 3: Cross multiply
    18,779.45x = 25,915.64 × 10,395.95
  4. Step 4: Simplify right side
    18,779.45x = 269,417,516.10
  5. Step 5: Solve for x
    x = 269,417,516.10/18,779.45
  6. Step 6: Final answer
    x = 14,346.40

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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.