Home / 28,564.53-42,855.54-12,782.84

Finding the Fourth Proportional to 28,564.53, 42,855.54 and 12,782.84

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Solution

The fourth proportional to 28,564.53, 42,855.54 and 12,782.84 is: 19,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.53 : 42,855.54 = 12,782.84 : x
  2. Step 2: Convert to fraction form
    28,564.53/42,855.54 = 12,782.84/x
  3. Step 3: Cross multiply
    28,564.53x = 42,855.54 × 12,782.84
  4. Step 4: Simplify right side
    28,564.53x = 547,815,510.93
  5. Step 5: Solve for x
    x = 547,815,510.93/28,564.53
  6. Step 6: Final answer
    x = 19,178.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.