Home / 28,602.90-42,903.18-11,958.66

Finding the Fourth Proportional to 28,602.90, 42,903.18 and 11,958.66

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Solution

The fourth proportional to 28,602.90, 42,903.18 and 11,958.66 is: 17,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.90 : 42,903.18 = 11,958.66 : x
  2. Step 2: Convert to fraction form
    28,602.90/42,903.18 = 11,958.66/x
  3. Step 3: Cross multiply
    28,602.90x = 42,903.18 × 11,958.66
  4. Step 4: Simplify right side
    28,602.90x = 513,064,542.54
  5. Step 5: Solve for x
    x = 513,064,542.54/28,602.90
  6. Step 6: Final answer
    x = 17,937.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.