Home / 25,784.58-38,640.38-10,978.59

Finding the Fourth Proportional to 25,784.58, 38,640.38 and 10,978.59

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Solution

The fourth proportional to 25,784.58, 38,640.38 and 10,978.59 is: 16,452.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,784.58 : 38,640.38 = 10,978.59 : x
  2. Step 2: Convert to fraction form
    25,784.58/38,640.38 = 10,978.59/x
  3. Step 3: Cross multiply
    25,784.58x = 38,640.38 × 10,978.59
  4. Step 4: Simplify right side
    25,784.58x = 424,216,889.46
  5. Step 5: Solve for x
    x = 424,216,889.46/25,784.58
  6. Step 6: Final answer
    x = 16,452.35

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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.