Home / 20,219,420.60-30,329,130.90-10,120,729.40

Finding the Fourth Proportional to 20,219,420.60, 30,329,130.90 and 10,120,729.40

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Solution

The fourth proportional to 20,219,420.60, 30,329,130.90 and 10,120,729.40 is: 15,181,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,420.60 : 30,329,130.90 = 10,120,729.40 : x
  2. Step 2: Convert to fraction form
    20,219,420.60/30,329,130.90 = 10,120,729.40/x
  3. Step 3: Cross multiply
    20,219,420.60x = 30,329,130.90 × 10,120,729.40
  4. Step 4: Simplify right side
    20,219,420.60x = 306,952,926,776,078.44
  5. Step 5: Solve for x
    x = 306,952,926,776,078.44/20,219,420.60
  6. Step 6: Final answer
    x = 15,181,094.10

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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.