Home / 20,740.86-28,622.16-12,674.52

Finding the Fourth Proportional to 20,740.86, 28,622.16 and 12,674.52

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Solution

The fourth proportional to 20,740.86, 28,622.16 and 12,674.52 is: 17,490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.86 : 28,622.16 = 12,674.52 : x
  2. Step 2: Convert to fraction form
    20,740.86/28,622.16 = 12,674.52/x
  3. Step 3: Cross multiply
    20,740.86x = 28,622.16 × 12,674.52
  4. Step 4: Simplify right side
    20,740.86x = 362,772,139.36
  5. Step 5: Solve for x
    x = 362,772,139.36/20,740.86
  6. Step 6: Final answer
    x = 17,490.70

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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.