Home / 25,700.21-35,477.19-15,631.86

Finding the Fourth Proportional to 25,700.21, 35,477.19 and 15,631.86

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Solution

The fourth proportional to 25,700.21, 35,477.19 and 15,631.86 is: 21,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,700.21 : 35,477.19 = 15,631.86 : x
  2. Step 2: Convert to fraction form
    25,700.21/35,477.19 = 15,631.86/x
  3. Step 3: Cross multiply
    25,700.21x = 35,477.19 × 15,631.86
  4. Step 4: Simplify right side
    25,700.21x = 554,574,467.27
  5. Step 5: Solve for x
    x = 554,574,467.27/25,700.21
  6. Step 6: Final answer
    x = 21,578.60

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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.