Home / 20,421,032.52-28,181,030.75-11,128,605.15

Finding the Fourth Proportional to 20,421,032.52, 28,181,030.75 and 11,128,605.15

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Solution

The fourth proportional to 20,421,032.52, 28,181,030.75 and 11,128,605.15 is: 15,357,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,032.52 : 28,181,030.75 = 11,128,605.15 : x
  2. Step 2: Convert to fraction form
    20,421,032.52/28,181,030.75 = 11,128,605.15/x
  3. Step 3: Cross multiply
    20,421,032.52x = 28,181,030.75 × 11,128,605.15
  4. Step 4: Simplify right side
    20,421,032.52x = 313,615,563,936,758.38
  5. Step 5: Solve for x
    x = 313,615,563,936,758.38/20,421,032.52
  6. Step 6: Final answer
    x = 15,357,478.31

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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.