Home / 25,387.90-35,038.89-14,780.95

Finding the Fourth Proportional to 25,387.90, 35,038.89 and 14,780.95

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Solution

The fourth proportional to 25,387.90, 35,038.89 and 14,780.95 is: 20,399.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.90 : 35,038.89 = 14,780.95 : x
  2. Step 2: Convert to fraction form
    25,387.90/35,038.89 = 14,780.95/x
  3. Step 3: Cross multiply
    25,387.90x = 35,038.89 × 14,780.95
  4. Step 4: Simplify right side
    25,387.90x = 517,907,993.55
  5. Step 5: Solve for x
    x = 517,907,993.55/25,387.90
  6. Step 6: Final answer
    x = 20,399.80

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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.