Home / 28,384.12-42,583.66-14,156.78

Finding the Fourth Proportional to 28,384.12, 42,583.66 and 14,156.78

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Solution

The fourth proportional to 28,384.12, 42,583.66 and 14,156.78 is: 21,238.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.12 : 42,583.66 = 14,156.78 : x
  2. Step 2: Convert to fraction form
    28,384.12/42,583.66 = 14,156.78/x
  3. Step 3: Cross multiply
    28,384.12x = 42,583.66 × 14,156.78
  4. Step 4: Simplify right side
    28,384.12x = 602,847,317.63
  5. Step 5: Solve for x
    x = 602,847,317.63/28,384.12
  6. Step 6: Final answer
    x = 21,238.89

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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.