Home / 20,864.99-28,784.54-12,476.63

Finding the Fourth Proportional to 20,864.99, 28,784.54 and 12,476.63

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Solution

The fourth proportional to 20,864.99, 28,784.54 and 12,476.63 is: 17,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.99 : 28,784.54 = 12,476.63 : x
  2. Step 2: Convert to fraction form
    20,864.99/28,784.54 = 12,476.63/x
  3. Step 3: Cross multiply
    20,864.99x = 28,784.54 × 12,476.63
  4. Step 4: Simplify right side
    20,864.99x = 359,133,848.99
  5. Step 5: Solve for x
    x = 359,133,848.99/20,864.99
  6. Step 6: Final answer
    x = 17,212.27

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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.