Home / 12,112,670-18,172,941.60-8,085,528.20

Finding the Fourth Proportional to 12,112,670, 18,172,941.60 and 8,085,528.20

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Solution

The fourth proportional to 12,112,670, 18,172,941.60 and 8,085,528.20 is: 12,130,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,670 : 18,172,941.60 = 8,085,528.20 : x
  2. Step 2: Convert to fraction form
    12,112,670/18,172,941.60 = 8,085,528.20/x
  3. Step 3: Cross multiply
    12,112,670x = 18,172,941.60 × 8,085,528.20
  4. Step 4: Simplify right side
    12,112,670x = 146,937,831,783,753.12
  5. Step 5: Solve for x
    x = 146,937,831,783,753.12/12,112,670
  6. Step 6: Final answer
    x = 12,130,920.08

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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.