Home / 21,298,336.80-31,947,505.20-8,528,006.40

Finding the Fourth Proportional to 21,298,336.80, 31,947,505.20 and 8,528,006.40

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Solution

The fourth proportional to 21,298,336.80, 31,947,505.20 and 8,528,006.40 is: 12,792,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298,336.80 : 31,947,505.20 = 8,528,006.40 : x
  2. Step 2: Convert to fraction form
    21,298,336.80/31,947,505.20 = 8,528,006.40/x
  3. Step 3: Cross multiply
    21,298,336.80x = 31,947,505.20 × 8,528,006.40
  4. Step 4: Simplify right side
    21,298,336.80x = 272,448,528,809,633.28
  5. Step 5: Solve for x
    x = 272,448,528,809,633.28/21,298,336.80
  6. Step 6: Final answer
    x = 12,792,009.60

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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.