Home / 25,688.99-35,452.14-15,615.78

Finding the Fourth Proportional to 25,688.99, 35,452.14 and 15,615.78

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Solution

The fourth proportional to 25,688.99, 35,452.14 and 15,615.78 is: 21,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,688.99 : 35,452.14 = 15,615.78 : x
  2. Step 2: Convert to fraction form
    25,688.99/35,452.14 = 15,615.78/x
  3. Step 3: Cross multiply
    25,688.99x = 35,452.14 × 15,615.78
  4. Step 4: Simplify right side
    25,688.99x = 553,612,818.77
  5. Step 5: Solve for x
    x = 553,612,818.77/25,688.99
  6. Step 6: Final answer
    x = 21,550.59

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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.