Home / 18,347.70-25,320.69-10,389.75

Finding the Fourth Proportional to 18,347.70, 25,320.69 and 10,389.75

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Solution

The fourth proportional to 18,347.70, 25,320.69 and 10,389.75 is: 14,338.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.70 : 25,320.69 = 10,389.75 : x
  2. Step 2: Convert to fraction form
    18,347.70/25,320.69 = 10,389.75/x
  3. Step 3: Cross multiply
    18,347.70x = 25,320.69 × 10,389.75
  4. Step 4: Simplify right side
    18,347.70x = 263,075,638.93
  5. Step 5: Solve for x
    x = 263,075,638.93/18,347.70
  6. Step 6: Final answer
    x = 14,338.34

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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.