Home / 13,685.55-18,886.07-7,397.92

Finding the Fourth Proportional to 13,685.55, 18,886.07 and 7,397.92

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Solution

The fourth proportional to 13,685.55, 18,886.07 and 7,397.92 is: 10,209.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.55 : 18,886.07 = 7,397.92 : x
  2. Step 2: Convert to fraction form
    13,685.55/18,886.07 = 7,397.92/x
  3. Step 3: Cross multiply
    13,685.55x = 18,886.07 × 7,397.92
  4. Step 4: Simplify right side
    13,685.55x = 139,717,597.98
  5. Step 5: Solve for x
    x = 139,717,597.98/13,685.55
  6. Step 6: Final answer
    x = 10,209.14

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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.