Home / 20,657,718.30-30,960,005.40-12,562,100.40

Finding the Fourth Proportional to 20,657,718.30, 30,960,005.40 and 12,562,100.40

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Solution

The fourth proportional to 20,657,718.30, 30,960,005.40 and 12,562,100.40 is: 18,826,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657,718.30 : 30,960,005.40 = 12,562,100.40 : x
  2. Step 2: Convert to fraction form
    20,657,718.30/30,960,005.40 = 12,562,100.40/x
  3. Step 3: Cross multiply
    20,657,718.30x = 30,960,005.40 × 12,562,100.40
  4. Step 4: Simplify right side
    20,657,718.30x = 388,922,696,219,342.12
  5. Step 5: Solve for x
    x = 388,922,696,219,342.12/20,657,718.30
  6. Step 6: Final answer
    x = 18,826,991.95

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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.