Home / 18,930.86-26,116.56-10,970.18

Finding the Fourth Proportional to 18,930.86, 26,116.56 and 10,970.18

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Solution

The fourth proportional to 18,930.86, 26,116.56 and 10,970.18 is: 15,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.86 : 26,116.56 = 10,970.18 : x
  2. Step 2: Convert to fraction form
    18,930.86/26,116.56 = 10,970.18/x
  3. Step 3: Cross multiply
    18,930.86x = 26,116.56 × 10,970.18
  4. Step 4: Simplify right side
    18,930.86x = 286,503,364.18
  5. Step 5: Solve for x
    x = 286,503,364.18/18,930.86
  6. Step 6: Final answer
    x = 15,134.20

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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.