Home / 13,785.52-19,013.60-9,543.68

Finding the Fourth Proportional to 13,785.52, 19,013.60 and 9,543.68

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Solution

The fourth proportional to 13,785.52, 19,013.60 and 9,543.68 is: 13,163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.52 : 19,013.60 = 9,543.68 : x
  2. Step 2: Convert to fraction form
    13,785.52/19,013.60 = 9,543.68/x
  3. Step 3: Cross multiply
    13,785.52x = 19,013.60 × 9,543.68
  4. Step 4: Simplify right side
    13,785.52x = 181,459,714.05
  5. Step 5: Solve for x
    x = 181,459,714.05/13,785.52
  6. Step 6: Final answer
    x = 13,163.07

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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.