Home / 28,574.75-39,424.04-18,510.91

Finding the Fourth Proportional to 28,574.75, 39,424.04 and 18,510.91

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Solution

The fourth proportional to 28,574.75, 39,424.04 and 18,510.91 is: 25,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.75 : 39,424.04 = 18,510.91 : x
  2. Step 2: Convert to fraction form
    28,574.75/39,424.04 = 18,510.91/x
  3. Step 3: Cross multiply
    28,574.75x = 39,424.04 × 18,510.91
  4. Step 4: Simplify right side
    28,574.75x = 729,774,705.43
  5. Step 5: Solve for x
    x = 729,774,705.43/28,574.75
  6. Step 6: Final answer
    x = 25,539.15

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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.