Home / 13,685.23-18,885.63-7,397.62

Finding the Fourth Proportional to 13,685.23, 18,885.63 and 7,397.62

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Solution

The fourth proportional to 13,685.23, 18,885.63 and 7,397.62 is: 10,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.23 : 18,885.63 = 7,397.62 : x
  2. Step 2: Convert to fraction form
    13,685.23/18,885.63 = 7,397.62/x
  3. Step 3: Cross multiply
    13,685.23x = 18,885.63 × 7,397.62
  4. Step 4: Simplify right side
    13,685.23x = 139,708,714.20
  5. Step 5: Solve for x
    x = 139,708,714.20/13,685.23
  6. Step 6: Final answer
    x = 10,208.72

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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.