Home / 21,453,342.80-32,181,569.40-12,915,294.80

Finding the Fourth Proportional to 21,453,342.80, 32,181,569.40 and 12,915,294.80

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Solution

The fourth proportional to 21,453,342.80, 32,181,569.40 and 12,915,294.80 is: 19,373,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453,342.80 : 32,181,569.40 = 12,915,294.80 : x
  2. Step 2: Convert to fraction form
    21,453,342.80/32,181,569.40 = 12,915,294.80/x
  3. Step 3: Cross multiply
    21,453,342.80x = 32,181,569.40 × 12,915,294.80
  4. Step 4: Simplify right side
    21,453,342.80x = 415,634,455,927,659.12
  5. Step 5: Solve for x
    x = 415,634,455,927,659.12/21,453,342.80
  6. Step 6: Final answer
    x = 19,373,878.46

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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.