Home / 15,070.40-20,776.74-12,708.44

Finding the Fourth Proportional to 15,070.40, 20,776.74 and 12,708.44

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Solution

The fourth proportional to 15,070.40, 20,776.74 and 12,708.44 is: 17,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.40 : 20,776.74 = 12,708.44 : x
  2. Step 2: Convert to fraction form
    15,070.40/20,776.74 = 12,708.44/x
  3. Step 3: Cross multiply
    15,070.40x = 20,776.74 × 12,708.44
  4. Step 4: Simplify right side
    15,070.40x = 264,039,953.69
  5. Step 5: Solve for x
    x = 264,039,953.69/15,070.40
  6. Step 6: Final answer
    x = 17,520.43

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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.