Home / 20,692,987.49-28,556,330.55-11,996,201.50

Finding the Fourth Proportional to 20,692,987.49, 28,556,330.55 and 11,996,201.50

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Solution

The fourth proportional to 20,692,987.49, 28,556,330.55 and 11,996,201.50 is: 16,554,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692,987.49 : 28,556,330.55 = 11,996,201.50 : x
  2. Step 2: Convert to fraction form
    20,692,987.49/28,556,330.55 = 11,996,201.50/x
  3. Step 3: Cross multiply
    20,692,987.49x = 28,556,330.55 × 11,996,201.50
  4. Step 4: Simplify right side
    20,692,987.49x = 342,567,495,378,405.81
  5. Step 5: Solve for x
    x = 342,567,495,378,405.81/20,692,987.49
  6. Step 6: Final answer
    x = 16,554,762.60

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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.