Home / 12,127,911.20-18,191,866.80-8,071,244.90

Finding the Fourth Proportional to 12,127,911.20, 18,191,866.80 and 8,071,244.90

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Solution

The fourth proportional to 12,127,911.20, 18,191,866.80 and 8,071,244.90 is: 12,106,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,911.20 : 18,191,866.80 = 8,071,244.90 : x
  2. Step 2: Convert to fraction form
    12,127,911.20/18,191,866.80 = 8,071,244.90/x
  3. Step 3: Cross multiply
    12,127,911.20x = 18,191,866.80 × 8,071,244.90
  4. Step 4: Simplify right side
    12,127,911.20x = 146,831,012,130,979.34
  5. Step 5: Solve for x
    x = 146,831,012,130,979.34/12,127,911.20
  6. Step 6: Final answer
    x = 12,106,867.35

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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.