Home / 18,518.81-25,549.67-10,555.40

Finding the Fourth Proportional to 18,518.81, 25,549.67 and 10,555.40

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Solution

The fourth proportional to 18,518.81, 25,549.67 and 10,555.40 is: 14,562.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.81 : 25,549.67 = 10,555.40 : x
  2. Step 2: Convert to fraction form
    18,518.81/25,549.67 = 10,555.40/x
  3. Step 3: Cross multiply
    18,518.81x = 25,549.67 × 10,555.40
  4. Step 4: Simplify right side
    18,518.81x = 269,686,806.19
  5. Step 5: Solve for x
    x = 269,686,806.19/18,518.81
  6. Step 6: Final answer
    x = 14,562.86

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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.