Home / 56,271.60-84,379.08-18,818.40

Finding the Fourth Proportional to 56,271.60, 84,379.08 and 18,818.40

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Solution

The fourth proportional to 56,271.60, 84,379.08 and 18,818.40 is: 28,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,271.60 : 84,379.08 = 18,818.40 : x
  2. Step 2: Convert to fraction form
    56,271.60/84,379.08 = 18,818.40/x
  3. Step 3: Cross multiply
    56,271.60x = 84,379.08 × 18,818.40
  4. Step 4: Simplify right side
    56,271.60x = 1,587,879,279.07
  5. Step 5: Solve for x
    x = 1,587,879,279.07/56,271.60
  6. Step 6: Final answer
    x = 28,218.13

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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.