Home / 12,905,085.60-19,371,625.20-7,236,381.60

Finding the Fourth Proportional to 12,905,085.60, 19,371,625.20 and 7,236,381.60

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Solution

The fourth proportional to 12,905,085.60, 19,371,625.20 and 7,236,381.60 is: 10,862,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905,085.60 : 19,371,625.20 = 7,236,381.60 : x
  2. Step 2: Convert to fraction form
    12,905,085.60/19,371,625.20 = 7,236,381.60/x
  3. Step 3: Cross multiply
    12,905,085.60x = 19,371,625.20 × 7,236,381.60
  4. Step 4: Simplify right side
    12,905,085.60x = 140,180,472,159,376.31
  5. Step 5: Solve for x
    x = 140,180,472,159,376.31/12,905,085.60
  6. Step 6: Final answer
    x = 10,862,420.95

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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.