Home / 20,666,655.35-28,519,459.47-11,247,045.93

Finding the Fourth Proportional to 20,666,655.35, 28,519,459.47 and 11,247,045.93

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Solution

The fourth proportional to 20,666,655.35, 28,519,459.47 and 11,247,045.93 is: 15,520,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666,655.35 : 28,519,459.47 = 11,247,045.93 : x
  2. Step 2: Convert to fraction form
    20,666,655.35/28,519,459.47 = 11,247,045.93/x
  3. Step 3: Cross multiply
    20,666,655.35x = 28,519,459.47 × 11,247,045.93
  4. Step 4: Simplify right side
    20,666,655.35x = 320,759,670,557,863.44
  5. Step 5: Solve for x
    x = 320,759,670,557,863.44/20,666,655.35
  6. Step 6: Final answer
    x = 15,520,637.72

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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.