Home / 20,501,428.19-28,292,561.39-11,334,661.43

Finding the Fourth Proportional to 20,501,428.19, 28,292,561.39 and 11,334,661.43

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Solution

The fourth proportional to 20,501,428.19, 28,292,561.39 and 11,334,661.43 is: 15,642,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501,428.19 : 28,292,561.39 = 11,334,661.43 : x
  2. Step 2: Convert to fraction form
    20,501,428.19/28,292,561.39 = 11,334,661.43/x
  3. Step 3: Cross multiply
    20,501,428.19x = 28,292,561.39 × 11,334,661.43
  4. Step 4: Simplify right side
    20,501,428.19x = 320,686,604,272,408.81
  5. Step 5: Solve for x
    x = 320,686,604,272,408.81/20,501,428.19
  6. Step 6: Final answer
    x = 15,642,159.24

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1.5x scale

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.