Home / 12,126,038.40-18,162,485.55-10,779,721.20

Finding the Fourth Proportional to 12,126,038.40, 18,162,485.55 and 10,779,721.20

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Solution

The fourth proportional to 12,126,038.40, 18,162,485.55 and 10,779,721.20 is: 16,145,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,038.40 : 18,162,485.55 = 10,779,721.20 : x
  2. Step 2: Convert to fraction form
    12,126,038.40/18,162,485.55 = 10,779,721.20/x
  3. Step 3: Cross multiply
    12,126,038.40x = 18,162,485.55 × 10,779,721.20
  4. Step 4: Simplify right side
    12,126,038.40x = 195,786,530,528,028.66
  5. Step 5: Solve for x
    x = 195,786,530,528,028.66/12,126,038.40
  6. Step 6: Final answer
    x = 16,145,959.96

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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.