Home / 13,443.84-18,551.34-7,475.40

Finding the Fourth Proportional to 13,443.84, 18,551.34 and 7,475.40

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Solution

The fourth proportional to 13,443.84, 18,551.34 and 7,475.40 is: 10,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.84 : 18,551.34 = 7,475.40 : x
  2. Step 2: Convert to fraction form
    13,443.84/18,551.34 = 7,475.40/x
  3. Step 3: Cross multiply
    13,443.84x = 18,551.34 × 7,475.40
  4. Step 4: Simplify right side
    13,443.84x = 138,678,687.04
  5. Step 5: Solve for x
    x = 138,678,687.04/13,443.84
  6. Step 6: Final answer
    x = 10,315.41

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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.