Home / 18,389.63-25,376.95-10,431.69

Finding the Fourth Proportional to 18,389.63, 25,376.95 and 10,431.69

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Solution

The fourth proportional to 18,389.63, 25,376.95 and 10,431.69 is: 14,395.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.63 : 25,376.95 = 10,431.69 : x
  2. Step 2: Convert to fraction form
    18,389.63/25,376.95 = 10,431.69/x
  3. Step 3: Cross multiply
    18,389.63x = 25,376.95 × 10,431.69
  4. Step 4: Simplify right side
    18,389.63x = 264,724,334.74
  5. Step 5: Solve for x
    x = 264,724,334.74/18,389.63
  6. Step 6: Final answer
    x = 14,395.30

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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.