Home / 13,627.81-18,806.25-7,659.46

Finding the Fourth Proportional to 13,627.81, 18,806.25 and 7,659.46

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Solution

The fourth proportional to 13,627.81, 18,806.25 and 7,659.46 is: 10,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.81 : 18,806.25 = 7,659.46 : x
  2. Step 2: Convert to fraction form
    13,627.81/18,806.25 = 7,659.46/x
  3. Step 3: Cross multiply
    13,627.81x = 18,806.25 × 7,659.46
  4. Step 4: Simplify right side
    13,627.81x = 144,045,719.63
  5. Step 5: Solve for x
    x = 144,045,719.63/13,627.81
  6. Step 6: Final answer
    x = 10,569.98

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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.