Home / 21,453,340.80-32,181,566.40-12,915,292.80

Finding the Fourth Proportional to 21,453,340.80, 32,181,566.40 and 12,915,292.80

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Solution

The fourth proportional to 21,453,340.80, 32,181,566.40 and 12,915,292.80 is: 19,373,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453,340.80 : 32,181,566.40 = 12,915,292.80 : x
  2. Step 2: Convert to fraction form
    21,453,340.80/32,181,566.40 = 12,915,292.80/x
  3. Step 3: Cross multiply
    21,453,340.80x = 32,181,566.40 × 12,915,292.80
  4. Step 4: Simplify right side
    21,453,340.80x = 415,634,352,818,641.94
  5. Step 5: Solve for x
    x = 415,634,352,818,641.94/21,453,340.80
  6. Step 6: Final answer
    x = 19,373,875.46

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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.