Home / 21,099.58-29,103.69-13,533.93

Finding the Fourth Proportional to 21,099.58, 29,103.69 and 13,533.93

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Solution

The fourth proportional to 21,099.58, 29,103.69 and 13,533.93 is: 18,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.58 : 29,103.69 = 13,533.93 : x
  2. Step 2: Convert to fraction form
    21,099.58/29,103.69 = 13,533.93/x
  3. Step 3: Cross multiply
    21,099.58x = 29,103.69 × 13,533.93
  4. Step 4: Simplify right side
    21,099.58x = 393,887,303.20
  5. Step 5: Solve for x
    x = 393,887,303.20/21,099.58
  6. Step 6: Final answer
    x = 18,668.02

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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.