Home / 33,178.95-45,783.63-20,430.09

Finding the Fourth Proportional to 33,178.95, 45,783.63 and 20,430.09

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Solution

The fourth proportional to 33,178.95, 45,783.63 and 20,430.09 is: 28,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,178.95 : 45,783.63 = 20,430.09 : x
  2. Step 2: Convert to fraction form
    33,178.95/45,783.63 = 20,430.09/x
  3. Step 3: Cross multiply
    33,178.95x = 45,783.63 × 20,430.09
  4. Step 4: Simplify right side
    33,178.95x = 935,363,681.43
  5. Step 5: Solve for x
    x = 935,363,681.43/33,178.95
  6. Step 6: Final answer
    x = 28,191.48

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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.