Home / 28,209,756.96-38,946,019.32-21,670,539.48

Finding the Fourth Proportional to 28,209,756.96, 38,946,019.32 and 21,670,539.48

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Solution

The fourth proportional to 28,209,756.96, 38,946,019.32 and 21,670,539.48 is: 29,918,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209,756.96 : 38,946,019.32 = 21,670,539.48 : x
  2. Step 2: Convert to fraction form
    28,209,756.96/38,946,019.32 = 21,670,539.48/x
  3. Step 3: Cross multiply
    28,209,756.96x = 38,946,019.32 × 21,670,539.48
  4. Step 4: Simplify right side
    28,209,756.96x = 843,981,249,262,902.75
  5. Step 5: Solve for x
    x = 843,981,249,262,902.75/28,209,756.96
  6. Step 6: Final answer
    x = 29,918,061.70

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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.