Home / 15,518,142-21,413,502.36-8,643,263.76

Finding the Fourth Proportional to 15,518,142, 21,413,502.36 and 8,643,263.76

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Solution

The fourth proportional to 15,518,142, 21,413,502.36 and 8,643,263.76 is: 11,926,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518,142 : 21,413,502.36 = 8,643,263.76 : x
  2. Step 2: Convert to fraction form
    15,518,142/21,413,502.36 = 8,643,263.76/x
  3. Step 3: Cross multiply
    15,518,142x = 21,413,502.36 × 8,643,263.76
  4. Step 4: Simplify right side
    15,518,142x = 185,082,548,922,862.47
  5. Step 5: Solve for x
    x = 185,082,548,922,862.47/15,518,142
  6. Step 6: Final answer
    x = 11,926,849.81

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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.