Home / 21,835.04-30,106.68-18,258.08

Finding the Fourth Proportional to 21,835.04, 30,106.68 and 18,258.08

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Solution

The fourth proportional to 21,835.04, 30,106.68 and 18,258.08 is: 25,174.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.04 : 30,106.68 = 18,258.08 : x
  2. Step 2: Convert to fraction form
    21,835.04/30,106.68 = 18,258.08/x
  3. Step 3: Cross multiply
    21,835.04x = 30,106.68 × 18,258.08
  4. Step 4: Simplify right side
    21,835.04x = 549,690,171.97
  5. Step 5: Solve for x
    x = 549,690,171.97/21,835.04
  6. Step 6: Final answer
    x = 25,174.68

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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.