Home / 13,507.33-18,639.95-7,539.05

Finding the Fourth Proportional to 13,507.33, 18,639.95 and 7,539.05

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Solution

The fourth proportional to 13,507.33, 18,639.95 and 7,539.05 is: 10,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.33 : 18,639.95 = 7,539.05 : x
  2. Step 2: Convert to fraction form
    13,507.33/18,639.95 = 7,539.05/x
  3. Step 3: Cross multiply
    13,507.33x = 18,639.95 × 7,539.05
  4. Step 4: Simplify right side
    13,507.33x = 140,527,515.05
  5. Step 5: Solve for x
    x = 140,527,515.05/13,507.33
  6. Step 6: Final answer
    x = 10,403.80

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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.