Home / 20,842,143.30-31,291,208.55-13,302,533.70

Finding the Fourth Proportional to 20,842,143.30, 31,291,208.55 and 13,302,533.70

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Solution

The fourth proportional to 20,842,143.30, 31,291,208.55 and 13,302,533.70 is: 19,971,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842,143.30 : 31,291,208.55 = 13,302,533.70 : x
  2. Step 2: Convert to fraction form
    20,842,143.30/31,291,208.55 = 13,302,533.70/x
  3. Step 3: Cross multiply
    20,842,143.30x = 31,291,208.55 × 13,302,533.70
  4. Step 4: Simplify right side
    20,842,143.30x = 416,252,356,250,103.12
  5. Step 5: Solve for x
    x = 416,252,356,250,103.12/20,842,143.30
  6. Step 6: Final answer
    x = 19,971,667.51

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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.