Home / 8,171,810.60-12,257,715.90-7,290,012.20

Finding the Fourth Proportional to 8,171,810.60, 12,257,715.90 and 7,290,012.20

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Solution

The fourth proportional to 8,171,810.60, 12,257,715.90 and 7,290,012.20 is: 10,935,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171,810.60 : 12,257,715.90 = 7,290,012.20 : x
  2. Step 2: Convert to fraction form
    8,171,810.60/12,257,715.90 = 7,290,012.20/x
  3. Step 3: Cross multiply
    8,171,810.60x = 12,257,715.90 × 7,290,012.20
  4. Step 4: Simplify right side
    8,171,810.60x = 89,358,898,455,133.98
  5. Step 5: Solve for x
    x = 89,358,898,455,133.98/8,171,810.60
  6. Step 6: Final answer
    x = 10,935,018.30

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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.