Home / 19,113.06-28,681.20-12,083.40

Finding the Fourth Proportional to 19,113.06, 28,681.20 and 12,083.40

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Solution

The fourth proportional to 19,113.06, 28,681.20 and 12,083.40 is: 18,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.06 : 28,681.20 = 12,083.40 : x
  2. Step 2: Convert to fraction form
    19,113.06/28,681.20 = 12,083.40/x
  3. Step 3: Cross multiply
    19,113.06x = 28,681.20 × 12,083.40
  4. Step 4: Simplify right side
    19,113.06x = 346,566,412.08
  5. Step 5: Solve for x
    x = 346,566,412.08/19,113.06
  6. Step 6: Final answer
    x = 18,132.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.