Home / 28,512,010.80-42,768,016.20-7,236,874.80

Finding the Fourth Proportional to 28,512,010.80, 42,768,016.20 and 7,236,874.80

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Solution

The fourth proportional to 28,512,010.80, 42,768,016.20 and 7,236,874.80 is: 10,855,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,010.80 : 42,768,016.20 = 7,236,874.80 : x
  2. Step 2: Convert to fraction form
    28,512,010.80/42,768,016.20 = 7,236,874.80/x
  3. Step 3: Cross multiply
    28,512,010.80x = 42,768,016.20 × 7,236,874.80
  4. Step 4: Simplify right side
    28,512,010.80x = 309,506,778,683,771.75
  5. Step 5: Solve for x
    x = 309,506,778,683,771.75/28,512,010.80
  6. Step 6: Final answer
    x = 10,855,312.20

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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.