Home / 21,026,019.60-31,476,043.80-12,501,968.40

Finding the Fourth Proportional to 21,026,019.60, 31,476,043.80 and 12,501,968.40

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Solution

The fourth proportional to 21,026,019.60, 31,476,043.80 and 12,501,968.40 is: 18,715,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026,019.60 : 31,476,043.80 = 12,501,968.40 : x
  2. Step 2: Convert to fraction form
    21,026,019.60/31,476,043.80 = 12,501,968.40/x
  3. Step 3: Cross multiply
    21,026,019.60x = 31,476,043.80 × 12,501,968.40
  4. Step 4: Simplify right side
    21,026,019.60x = 393,512,504,944,615.94
  5. Step 5: Solve for x
    x = 393,512,504,944,615.94/21,026,019.60
  6. Step 6: Final answer
    x = 18,715,501.67

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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.