Home / 20,072,155.20-30,243,168.33-18,155,203.56

Finding the Fourth Proportional to 20,072,155.20, 30,243,168.33 and 18,155,203.56

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Solution

The fourth proportional to 20,072,155.20, 30,243,168.33 and 18,155,203.56 is: 27,354,854.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072,155.20 : 30,243,168.33 = 18,155,203.56 : x
  2. Step 2: Convert to fraction form
    20,072,155.20/30,243,168.33 = 18,155,203.56/x
  3. Step 3: Cross multiply
    20,072,155.20x = 30,243,168.33 × 18,155,203.56
  4. Step 4: Simplify right side
    20,072,155.20x = 549,070,877,330,495.19
  5. Step 5: Solve for x
    x = 549,070,877,330,495.19/20,072,155.20
  6. Step 6: Final answer
    x = 27,354,854.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.