Home / 28,509.84-39,311.46-18,424.98

Finding the Fourth Proportional to 28,509.84, 39,311.46 and 18,424.98

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Solution

The fourth proportional to 28,509.84, 39,311.46 and 18,424.98 is: 25,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.84 : 39,311.46 = 18,424.98 : x
  2. Step 2: Convert to fraction form
    28,509.84/39,311.46 = 18,424.98/x
  3. Step 3: Cross multiply
    28,509.84x = 39,311.46 × 18,424.98
  4. Step 4: Simplify right side
    28,509.84x = 724,312,864.27
  5. Step 5: Solve for x
    x = 724,312,864.27/28,509.84
  6. Step 6: Final answer
    x = 25,405.71

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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.