Home / 25,895.91-35,731.00-15,138.71

Finding the Fourth Proportional to 25,895.91, 35,731.00 and 15,138.71

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Solution

The fourth proportional to 25,895.91, 35,731.00 and 15,138.71 is: 20,888.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,895.91 : 35,731.00 = 15,138.71 : x
  2. Step 2: Convert to fraction form
    25,895.91/35,731.00 = 15,138.71/x
  3. Step 3: Cross multiply
    25,895.91x = 35,731.00 × 15,138.71
  4. Step 4: Simplify right side
    25,895.91x = 540,921,030.51
  5. Step 5: Solve for x
    x = 540,921,030.51/25,895.91
  6. Step 6: Final answer
    x = 20,888.28

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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.