Home / 21,359,619.40-32,114,078.70-20,911,721.80

Finding the Fourth Proportional to 21,359,619.40, 32,114,078.70 and 20,911,721.80

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Solution

The fourth proportional to 21,359,619.40, 32,114,078.70 and 20,911,721.80 is: 31,440,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359,619.40 : 32,114,078.70 = 20,911,721.80 : x
  2. Step 2: Convert to fraction form
    21,359,619.40/32,114,078.70 = 20,911,721.80/x
  3. Step 3: Cross multiply
    21,359,619.40x = 32,114,078.70 × 20,911,721.80
  4. Step 4: Simplify right side
    21,359,619.40x = 671,560,679,637,705.62
  5. Step 5: Solve for x
    x = 671,560,679,637,705.62/21,359,619.40
  6. Step 6: Final answer
    x = 31,440,666.95

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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.