Home / 18,877.80-28,316.70-9,036.30

Finding the Fourth Proportional to 18,877.80, 28,316.70 and 9,036.30

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Solution

The fourth proportional to 18,877.80, 28,316.70 and 9,036.30 is: 13,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.80 : 28,316.70 = 9,036.30 : x
  2. Step 2: Convert to fraction form
    18,877.80/28,316.70 = 9,036.30/x
  3. Step 3: Cross multiply
    18,877.80x = 28,316.70 × 9,036.30
  4. Step 4: Simplify right side
    18,877.80x = 255,878,196.21
  5. Step 5: Solve for x
    x = 255,878,196.21/18,877.80
  6. Step 6: Final answer
    x = 13,554.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.