Home / 20,972,332.60-31,395,513.30-12,448,281.40

Finding the Fourth Proportional to 20,972,332.60, 31,395,513.30 and 12,448,281.40

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Solution

The fourth proportional to 20,972,332.60, 31,395,513.30 and 12,448,281.40 is: 18,635,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,332.60 : 31,395,513.30 = 12,448,281.40 : x
  2. Step 2: Convert to fraction form
    20,972,332.60/31,395,513.30 = 12,448,281.40/x
  3. Step 3: Cross multiply
    20,972,332.60x = 31,395,513.30 × 12,448,281.40
  4. Step 4: Simplify right side
    20,972,332.60x = 390,820,184,255,842.62
  5. Step 5: Solve for x
    x = 390,820,184,255,842.62/20,972,332.60
  6. Step 6: Final answer
    x = 18,635,036.54

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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.