Home / 18,389.34-25,376.79-10,005.66

Finding the Fourth Proportional to 18,389.34, 25,376.79 and 10,005.66

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Solution

The fourth proportional to 18,389.34, 25,376.79 and 10,005.66 is: 13,807.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.34 : 25,376.79 = 10,005.66 : x
  2. Step 2: Convert to fraction form
    18,389.34/25,376.79 = 10,005.66/x
  3. Step 3: Cross multiply
    18,389.34x = 25,376.79 × 10,005.66
  4. Step 4: Simplify right side
    18,389.34x = 253,911,532.63
  5. Step 5: Solve for x
    x = 253,911,532.63/18,389.34
  6. Step 6: Final answer
    x = 13,807.54

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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.