Home / 28,521.86-42,782.85-12,722.81

Finding the Fourth Proportional to 28,521.86, 42,782.85 and 12,722.81

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Solution

The fourth proportional to 28,521.86, 42,782.85 and 12,722.81 is: 19,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.86 : 42,782.85 = 12,722.81 : x
  2. Step 2: Convert to fraction form
    28,521.86/42,782.85 = 12,722.81/x
  3. Step 3: Cross multiply
    28,521.86x = 42,782.85 × 12,722.81
  4. Step 4: Simplify right side
    28,521.86x = 544,317,857.89
  5. Step 5: Solve for x
    x = 544,317,857.89/28,521.86
  6. Step 6: Final answer
    x = 19,084.24

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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.