Home / 20,403,929.79-28,158,705.41-11,236,573.35

Finding the Fourth Proportional to 20,403,929.79, 28,158,705.41 and 11,236,573.35

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Solution

The fourth proportional to 20,403,929.79, 28,158,705.41 and 11,236,573.35 is: 15,507,177.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,929.79 : 28,158,705.41 = 11,236,573.35 : x
  2. Step 2: Convert to fraction form
    20,403,929.79/28,158,705.41 = 11,236,573.35/x
  3. Step 3: Cross multiply
    20,403,929.79x = 28,158,705.41 × 11,236,573.35
  4. Step 4: Simplify right side
    20,403,929.79x = 316,407,358,724,323.94
  5. Step 5: Solve for x
    x = 316,407,358,724,323.94/20,403,929.79
  6. Step 6: Final answer
    x = 15,507,177.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.