Home / 25,308.90-34,925.79-13,978.20

Finding the Fourth Proportional to 25,308.90, 34,925.79 and 13,978.20

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Solution

The fourth proportional to 25,308.90, 34,925.79 and 13,978.20 is: 19,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,308.90 : 34,925.79 = 13,978.20 : x
  2. Step 2: Convert to fraction form
    25,308.90/34,925.79 = 13,978.20/x
  3. Step 3: Cross multiply
    25,308.90x = 34,925.79 × 13,978.20
  4. Step 4: Simplify right side
    25,308.90x = 488,199,677.78
  5. Step 5: Solve for x
    x = 488,199,677.78/25,308.90
  6. Step 6: Final answer
    x = 19,289.64

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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.