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Finding the Fourth Proportional to 15,798,061.80, 23,697,092.70 and 12,928,280.40

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Solution

The fourth proportional to 15,798,061.80, 23,697,092.70 and 12,928,280.40 is: 19,392,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798,061.80 : 23,697,092.70 = 12,928,280.40 : x
  2. Step 2: Convert to fraction form
    15,798,061.80/23,697,092.70 = 12,928,280.40/x
  3. Step 3: Cross multiply
    15,798,061.80x = 23,697,092.70 × 12,928,280.40
  4. Step 4: Simplify right side
    15,798,061.80x = 306,362,659,090,393.06
  5. Step 5: Solve for x
    x = 306,362,659,090,393.06/15,798,061.80
  6. Step 6: Final answer
    x = 19,392,420.60

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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.