Home / 18,384.31-25,366.98-12,009.21

Finding the Fourth Proportional to 18,384.31, 25,366.98 and 12,009.21

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Solution

The fourth proportional to 18,384.31, 25,366.98 and 12,009.21 is: 16,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.31 : 25,366.98 = 12,009.21 : x
  2. Step 2: Convert to fraction form
    18,384.31/25,366.98 = 12,009.21/x
  3. Step 3: Cross multiply
    18,384.31x = 25,366.98 × 12,009.21
  4. Step 4: Simplify right side
    18,384.31x = 304,637,389.89
  5. Step 5: Solve for x
    x = 304,637,389.89/18,384.31
  6. Step 6: Final answer
    x = 16,570.51

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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.