Home / 18,347.57-25,319.75-10,390.53

Finding the Fourth Proportional to 18,347.57, 25,319.75 and 10,390.53

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Solution

The fourth proportional to 18,347.57, 25,319.75 and 10,390.53 is: 14,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.57 : 25,319.75 = 10,390.53 : x
  2. Step 2: Convert to fraction form
    18,347.57/25,319.75 = 10,390.53/x
  3. Step 3: Cross multiply
    18,347.57x = 25,319.75 × 10,390.53
  4. Step 4: Simplify right side
    18,347.57x = 263,085,570.01
  5. Step 5: Solve for x
    x = 263,085,570.01/18,347.57
  6. Step 6: Final answer
    x = 14,338.99

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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.