Home / 13,556,090.40-20,327,720.40-7,878,055.20

Finding the Fourth Proportional to 13,556,090.40, 20,327,720.40 and 7,878,055.20

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Solution

The fourth proportional to 13,556,090.40, 20,327,720.40 and 7,878,055.20 is: 11,813,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556,090.40 : 20,327,720.40 = 7,878,055.20 : x
  2. Step 2: Convert to fraction form
    13,556,090.40/20,327,720.40 = 7,878,055.20/x
  3. Step 3: Cross multiply
    13,556,090.40x = 20,327,720.40 × 7,878,055.20
  4. Step 4: Simplify right side
    13,556,090.40x = 160,142,903,401,366.06
  5. Step 5: Solve for x
    x = 160,142,903,401,366.06/13,556,090.40
  6. Step 6: Final answer
    x = 11,813,354.64

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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.