Home / 12,586,928.40-18,885,058.20-12,120,368.40

Finding the Fourth Proportional to 12,586,928.40, 18,885,058.20 and 12,120,368.40

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Solution

The fourth proportional to 12,586,928.40, 18,885,058.20 and 12,120,368.40 is: 18,185,045.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586,928.40 : 18,885,058.20 = 12,120,368.40 : x
  2. Step 2: Convert to fraction form
    12,586,928.40/18,885,058.20 = 12,120,368.40/x
  3. Step 3: Cross multiply
    12,586,928.40x = 18,885,058.20 × 12,120,368.40
  4. Step 4: Simplify right side
    12,586,928.40x = 228,893,862,639,440.88
  5. Step 5: Solve for x
    x = 228,893,862,639,440.88/12,586,928.40
  6. Step 6: Final answer
    x = 18,185,045.26

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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.