Home / 12,127,986.70-18,191,980.05-8,071,320.40

Finding the Fourth Proportional to 12,127,986.70, 18,191,980.05 and 8,071,320.40

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Solution

The fourth proportional to 12,127,986.70, 18,191,980.05 and 8,071,320.40 is: 12,106,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,986.70 : 18,191,980.05 = 8,071,320.40 : x
  2. Step 2: Convert to fraction form
    12,127,986.70/18,191,980.05 = 8,071,320.40/x
  3. Step 3: Cross multiply
    12,127,986.70x = 18,191,980.05 × 8,071,320.40
  4. Step 4: Simplify right side
    12,127,986.70x = 146,833,299,693,958.03
  5. Step 5: Solve for x
    x = 146,833,299,693,958.03/12,127,986.70
  6. Step 6: Final answer
    x = 12,106,980.60

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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.