Home / 15,810.96-23,730.80-8,421.72

Finding the Fourth Proportional to 15,810.96, 23,730.80 and 8,421.72

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Solution

The fourth proportional to 15,810.96, 23,730.80 and 8,421.72 is: 12,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.96 : 23,730.80 = 8,421.72 : x
  2. Step 2: Convert to fraction form
    15,810.96/23,730.80 = 8,421.72/x
  3. Step 3: Cross multiply
    15,810.96x = 23,730.80 × 8,421.72
  4. Step 4: Simplify right side
    15,810.96x = 199,854,152.98
  5. Step 5: Solve for x
    x = 199,854,152.98/15,810.96
  6. Step 6: Final answer
    x = 12,640.23

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1.5x scale

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.