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Finding the Fourth Proportional to 19,264,559.80, 28,896,839.70 and 12,877,871.80

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Solution

The fourth proportional to 19,264,559.80, 28,896,839.70 and 12,877,871.80 is: 19,316,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,264,559.80 : 28,896,839.70 = 12,877,871.80 : x
  2. Step 2: Convert to fraction form
    19,264,559.80/28,896,839.70 = 12,877,871.80/x
  3. Step 3: Cross multiply
    19,264,559.80x = 28,896,839.70 × 12,877,871.80
  4. Step 4: Simplify right side
    19,264,559.80x = 372,129,797,081,750.50
  5. Step 5: Solve for x
    x = 372,129,797,081,750.50/19,264,559.80
  6. Step 6: Final answer
    x = 19,316,807.70

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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.