Home / 20,421,026.55-28,181,022.51-11,128,599.17

Finding the Fourth Proportional to 20,421,026.55, 28,181,022.51 and 11,128,599.17

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Solution

The fourth proportional to 20,421,026.55, 28,181,022.51 and 11,128,599.17 is: 15,357,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,026.55 : 28,181,022.51 = 11,128,599.17 : x
  2. Step 2: Convert to fraction form
    20,421,026.55/28,181,022.51 = 11,128,599.17/x
  3. Step 3: Cross multiply
    20,421,026.55x = 28,181,022.51 × 11,128,599.17
  4. Step 4: Simplify right side
    20,421,026.55x = 313,615,303,573,632.19
  5. Step 5: Solve for x
    x = 313,615,303,573,632.19/20,421,026.55
  6. Step 6: Final answer
    x = 15,357,470.05

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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.