Home / 12,688,038.90-17,509,511.40-6,886,821.84

Finding the Fourth Proportional to 12,688,038.90, 17,509,511.40 and 6,886,821.84

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Solution

The fourth proportional to 12,688,038.90, 17,509,511.40 and 6,886,821.84 is: 9,503,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688,038.90 : 17,509,511.40 = 6,886,821.84 : x
  2. Step 2: Convert to fraction form
    12,688,038.90/17,509,511.40 = 6,886,821.84/x
  3. Step 3: Cross multiply
    12,688,038.90x = 17,509,511.40 × 6,886,821.84
  4. Step 4: Simplify right side
    12,688,038.90x = 120,584,885,517,248.97
  5. Step 5: Solve for x
    x = 120,584,885,517,248.97/12,688,038.90
  6. Step 6: Final answer
    x = 9,503,823.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.