Home / 28,611.76-39,497.21-18,417.51

Finding the Fourth Proportional to 28,611.76, 39,497.21 and 18,417.51

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Solution

The fourth proportional to 28,611.76, 39,497.21 and 18,417.51 is: 25,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.76 : 39,497.21 = 18,417.51 : x
  2. Step 2: Convert to fraction form
    28,611.76/39,497.21 = 18,417.51/x
  3. Step 3: Cross multiply
    28,611.76x = 39,497.21 × 18,417.51
  4. Step 4: Simplify right side
    28,611.76x = 727,439,970.57
  5. Step 5: Solve for x
    x = 727,439,970.57/28,611.76
  6. Step 6: Final answer
    x = 25,424.51

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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.