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Finding the Fourth Proportional to 13,069,344.80, 18,315,978.40 and 13,069,344.80

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Solution

The fourth proportional to 13,069,344.80, 18,315,978.40 and 13,069,344.80 is: 18,315,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069,344.80 : 18,315,978.40 = 13,069,344.80 : x
  2. Step 2: Convert to fraction form
    13,069,344.80/18,315,978.40 = 13,069,344.80/x
  3. Step 3: Cross multiply
    13,069,344.80x = 18,315,978.40 × 13,069,344.80
  4. Step 4: Simplify right side
    13,069,344.80x = 239,377,837,058,952.31
  5. Step 5: Solve for x
    x = 239,377,837,058,952.31/13,069,344.80
  6. Step 6: Final answer
    x = 18,315,978.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.