Home / 18,347.45-25,318.71-10,389.47

Finding the Fourth Proportional to 18,347.45, 25,318.71 and 10,389.47

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Solution

The fourth proportional to 18,347.45, 25,318.71 and 10,389.47 is: 14,337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.45 : 25,318.71 = 10,389.47 : x
  2. Step 2: Convert to fraction form
    18,347.45/25,318.71 = 10,389.47/x
  3. Step 3: Cross multiply
    18,347.45x = 25,318.71 × 10,389.47
  4. Step 4: Simplify right side
    18,347.45x = 263,047,851.39
  5. Step 5: Solve for x
    x = 263,047,851.39/18,347.45
  6. Step 6: Final answer
    x = 14,337.03

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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.