Home / 18,988.95-26,187.73-15,812.76

Finding the Fourth Proportional to 18,988.95, 26,187.73 and 15,812.76

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Solution

The fourth proportional to 18,988.95, 26,187.73 and 15,812.76 is: 21,807.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.95 : 26,187.73 = 15,812.76 : x
  2. Step 2: Convert to fraction form
    18,988.95/26,187.73 = 15,812.76/x
  3. Step 3: Cross multiply
    18,988.95x = 26,187.73 × 15,812.76
  4. Step 4: Simplify right side
    18,988.95x = 414,100,348.11
  5. Step 5: Solve for x
    x = 414,100,348.11/18,988.95
  6. Step 6: Final answer
    x = 21,807.43

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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.