Home / 20,830,284.60-28,746,089.50-12,009,561.38

Finding the Fourth Proportional to 20,830,284.60, 28,746,089.50 and 12,009,561.38

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Solution

The fourth proportional to 20,830,284.60, 28,746,089.50 and 12,009,561.38 is: 16,573,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830,284.60 : 28,746,089.50 = 12,009,561.38 : x
  2. Step 2: Convert to fraction form
    20,830,284.60/28,746,089.50 = 12,009,561.38/x
  3. Step 3: Cross multiply
    20,830,284.60x = 28,746,089.50 × 12,009,561.38
  4. Step 4: Simplify right side
    20,830,284.60x = 345,227,926,285,223.56
  5. Step 5: Solve for x
    x = 345,227,926,285,223.56/20,830,284.60
  6. Step 6: Final answer
    x = 16,573,365.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.