Home / 19,421.86-26,800.13-11,870.03

Finding the Fourth Proportional to 19,421.86, 26,800.13 and 11,870.03

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Solution

The fourth proportional to 19,421.86, 26,800.13 and 11,870.03 is: 16,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.86 : 26,800.13 = 11,870.03 : x
  2. Step 2: Convert to fraction form
    19,421.86/26,800.13 = 11,870.03/x
  3. Step 3: Cross multiply
    19,421.86x = 26,800.13 × 11,870.03
  4. Step 4: Simplify right side
    19,421.86x = 318,118,347.10
  5. Step 5: Solve for x
    x = 318,118,347.10/19,421.86
  6. Step 6: Final answer
    x = 16,379.40

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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.