Home / 18,990.52-26,205.64-11,435.40

Finding the Fourth Proportional to 18,990.52, 26,205.64 and 11,435.40

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Solution

The fourth proportional to 18,990.52, 26,205.64 and 11,435.40 is: 15,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.52 : 26,205.64 = 11,435.40 : x
  2. Step 2: Convert to fraction form
    18,990.52/26,205.64 = 11,435.40/x
  3. Step 3: Cross multiply
    18,990.52x = 26,205.64 × 11,435.40
  4. Step 4: Simplify right side
    18,990.52x = 299,671,975.66
  5. Step 5: Solve for x
    x = 299,671,975.66/18,990.52
  6. Step 6: Final answer
    x = 15,780.08

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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.