Home / 14,089.90-19,437.82-8,421.77

Finding the Fourth Proportional to 14,089.90, 19,437.82 and 8,421.77

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Solution

The fourth proportional to 14,089.90, 19,437.82 and 8,421.77 is: 11,618.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.90 : 19,437.82 = 8,421.77 : x
  2. Step 2: Convert to fraction form
    14,089.90/19,437.82 = 8,421.77/x
  3. Step 3: Cross multiply
    14,089.90x = 19,437.82 × 8,421.77
  4. Step 4: Simplify right side
    14,089.90x = 163,700,924.25
  5. Step 5: Solve for x
    x = 163,700,924.25/14,089.90
  6. Step 6: Final answer
    x = 11,618.32

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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.