Home / 30,903.06-42,630.53-19,553.43

Finding the Fourth Proportional to 30,903.06, 42,630.53 and 19,553.43

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Solution

The fourth proportional to 30,903.06, 42,630.53 and 19,553.43 is: 26,973.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.06 : 42,630.53 = 19,553.43 : x
  2. Step 2: Convert to fraction form
    30,903.06/42,630.53 = 19,553.43/x
  3. Step 3: Cross multiply
    30,903.06x = 42,630.53 × 19,553.43
  4. Step 4: Simplify right side
    30,903.06x = 833,572,986.45
  5. Step 5: Solve for x
    x = 833,572,986.45/30,903.06
  6. Step 6: Final answer
    x = 26,973.80

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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.