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Finding the Fourth Proportional to 18,593,148.40, 27,889,722.60 and 18,486,860.20

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Solution

The fourth proportional to 18,593,148.40, 27,889,722.60 and 18,486,860.20 is: 27,730,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593,148.40 : 27,889,722.60 = 18,486,860.20 : x
  2. Step 2: Convert to fraction form
    18,593,148.40/27,889,722.60 = 18,486,860.20/x
  3. Step 3: Cross multiply
    18,593,148.40x = 27,889,722.60 × 18,486,860.20
  4. Step 4: Simplify right side
    18,593,148.40x = 515,593,402,722,980.50
  5. Step 5: Solve for x
    x = 515,593,402,722,980.50/18,593,148.40
  6. Step 6: Final answer
    x = 27,730,290.30

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1.5x scale

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.