Home / 25,863.70-35,685.61-15,788.47

Finding the Fourth Proportional to 25,863.70, 35,685.61 and 15,788.47

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Solution

The fourth proportional to 25,863.70, 35,685.61 and 15,788.47 is: 21,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,863.70 : 35,685.61 = 15,788.47 : x
  2. Step 2: Convert to fraction form
    25,863.70/35,685.61 = 15,788.47/x
  3. Step 3: Cross multiply
    25,863.70x = 35,685.61 × 15,788.47
  4. Step 4: Simplify right side
    25,863.70x = 563,421,182.92
  5. Step 5: Solve for x
    x = 563,421,182.92/25,863.70
  6. Step 6: Final answer
    x = 21,784.25

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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.