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Finding the Fourth Proportional to 25,695.51, 35,465.52 and 15,621.82

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Solution

The fourth proportional to 25,695.51, 35,465.52 and 15,621.82 is: 21,561.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,695.51 : 35,465.52 = 15,621.82 : x
  2. Step 2: Convert to fraction form
    25,695.51/35,465.52 = 15,621.82/x
  3. Step 3: Cross multiply
    25,695.51x = 35,465.52 × 15,621.82
  4. Step 4: Simplify right side
    25,695.51x = 554,035,969.65
  5. Step 5: Solve for x
    x = 554,035,969.65/25,695.51
  6. Step 6: Final answer
    x = 21,561.59

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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.