Home / 18,858,528,089.30-28,287,792,133.95-7,813,373,273.30

Finding the Fourth Proportional to 18,858,528,089.30, 28,287,792,133.95 and 7,813,373,273.30

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Solution

The fourth proportional to 18,858,528,089.30, 28,287,792,133.95 and 7,813,373,273.30 is: 11,720,059,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,528,089.30 : 28,287,792,133.95 = 7,813,373,273.30 : x
  2. Step 2: Convert to fraction form
    18,858,528,089.30/28,287,792,133.95 = 7,813,373,273.30/x
  3. Step 3: Cross multiply
    18,858,528,089.30x = 28,287,792,133.95 × 7,813,373,273.30
  4. Step 4: Simplify right side
    18,858,528,089.30x = 221,023,079,020,070,928,384
  5. Step 5: Solve for x
    x = 221,023,079,020,070,928,384/18,858,528,089.30
  6. Step 6: Final answer
    x = 11,720,059,909.95

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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.