Home / 21,580.07-29,783.34-12,150.47

Finding the Fourth Proportional to 21,580.07, 29,783.34 and 12,150.47

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Solution

The fourth proportional to 21,580.07, 29,783.34 and 12,150.47 is: 16,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.07 : 29,783.34 = 12,150.47 : x
  2. Step 2: Convert to fraction form
    21,580.07/29,783.34 = 12,150.47/x
  3. Step 3: Cross multiply
    21,580.07x = 29,783.34 × 12,150.47
  4. Step 4: Simplify right side
    21,580.07x = 361,881,518.42
  5. Step 5: Solve for x
    x = 361,881,518.42/21,580.07
  6. Step 6: Final answer
    x = 16,769.25

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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.