Home / 18,736.40-28,118.45-8,875.70

Finding the Fourth Proportional to 18,736.40, 28,118.45 and 8,875.70

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Solution

The fourth proportional to 18,736.40, 28,118.45 and 8,875.70 is: 13,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.40 : 28,118.45 = 8,875.70 : x
  2. Step 2: Convert to fraction form
    18,736.40/28,118.45 = 8,875.70/x
  3. Step 3: Cross multiply
    18,736.40x = 28,118.45 × 8,875.70
  4. Step 4: Simplify right side
    18,736.40x = 249,570,786.07
  5. Step 5: Solve for x
    x = 249,570,786.07/18,736.40
  6. Step 6: Final answer
    x = 13,320.11

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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.