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Finding the Fourth Proportional to 16,347,280.80, 24,478,930.80 and 12,960,055.20

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Solution

The fourth proportional to 16,347,280.80, 24,478,930.80 and 12,960,055.20 is: 19,406,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,347,280.80 : 24,478,930.80 = 12,960,055.20 : x
  2. Step 2: Convert to fraction form
    16,347,280.80/24,478,930.80 = 12,960,055.20/x
  3. Step 3: Cross multiply
    16,347,280.80x = 24,478,930.80 × 12,960,055.20
  4. Step 4: Simplify right side
    16,347,280.80x = 317,248,294,404,980.12
  5. Step 5: Solve for x
    x = 317,248,294,404,980.12/16,347,280.80
  6. Step 6: Final answer
    x = 19,406,792.99

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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.