Home / 21,780,939.60-32,671,409.40-19,429,477.20

Finding the Fourth Proportional to 21,780,939.60, 32,671,409.40 and 19,429,477.20

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Solution

The fourth proportional to 21,780,939.60, 32,671,409.40 and 19,429,477.20 is: 29,144,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,939.60 : 32,671,409.40 = 19,429,477.20 : x
  2. Step 2: Convert to fraction form
    21,780,939.60/32,671,409.40 = 19,429,477.20/x
  3. Step 3: Cross multiply
    21,780,939.60x = 32,671,409.40 × 19,429,477.20
  4. Step 4: Simplify right side
    21,780,939.60x = 634,788,404,029,165.62
  5. Step 5: Solve for x
    x = 634,788,404,029,165.62/21,780,939.60
  6. Step 6: Final answer
    x = 29,144,215.80

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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.