Home / 25,390.89-35,017.67-15,317.12

Finding the Fourth Proportional to 25,390.89, 35,017.67 and 15,317.12

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Solution

The fourth proportional to 25,390.89, 35,017.67 and 15,317.12 is: 21,124.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.89 : 35,017.67 = 15,317.12 : x
  2. Step 2: Convert to fraction form
    25,390.89/35,017.67 = 15,317.12/x
  3. Step 3: Cross multiply
    25,390.89x = 35,017.67 × 15,317.12
  4. Step 4: Simplify right side
    25,390.89x = 536,369,979.35
  5. Step 5: Solve for x
    x = 536,369,979.35/25,390.89
  6. Step 6: Final answer
    x = 21,124.50

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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.