Home / 15,555,217.86-21,476,312.10-13,920,815.37

Finding the Fourth Proportional to 15,555,217.86, 21,476,312.10 and 13,920,815.37

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Solution

The fourth proportional to 15,555,217.86, 21,476,312.10 and 13,920,815.37 is: 19,219,774.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555,217.86 : 21,476,312.10 = 13,920,815.37 : x
  2. Step 2: Convert to fraction form
    15,555,217.86/21,476,312.10 = 13,920,815.37/x
  3. Step 3: Cross multiply
    15,555,217.86x = 21,476,312.10 × 13,920,815.37
  4. Step 4: Simplify right side
    15,555,217.86x = 298,967,775,572,597
  5. Step 5: Solve for x
    x = 298,967,775,572,597/15,555,217.86
  6. Step 6: Final answer
    x = 19,219,774.24

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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.