Home / 28,358,856.40-42,559,279.80-18,771,048.40

Finding the Fourth Proportional to 28,358,856.40, 42,559,279.80 and 18,771,048.40

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Solution

The fourth proportional to 28,358,856.40, 42,559,279.80 and 18,771,048.40 is: 28,170,469.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358,856.40 : 42,559,279.80 = 18,771,048.40 : x
  2. Step 2: Convert to fraction form
    28,358,856.40/42,559,279.80 = 18,771,048.40/x
  3. Step 3: Cross multiply
    28,358,856.40x = 42,559,279.80 × 18,771,048.40
  4. Step 4: Simplify right side
    28,358,856.40x = 798,882,300,994,942.25
  5. Step 5: Solve for x
    x = 798,882,300,994,942.25/28,358,856.40
  6. Step 6: Final answer
    x = 28,170,469.56

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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.