Home / 30,938.51-42,695.15-16,791.35

Finding the Fourth Proportional to 30,938.51, 42,695.15 and 16,791.35

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Solution

The fourth proportional to 30,938.51, 42,695.15 and 16,791.35 is: 23,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.51 : 42,695.15 = 16,791.35 : x
  2. Step 2: Convert to fraction form
    30,938.51/42,695.15 = 16,791.35/x
  3. Step 3: Cross multiply
    30,938.51x = 42,695.15 × 16,791.35
  4. Step 4: Simplify right side
    30,938.51x = 716,908,993.48
  5. Step 5: Solve for x
    x = 716,908,993.48/30,938.51
  6. Step 6: Final answer
    x = 23,172.06

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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.