Home / 21,970.09-30,316.56-12,277.76

Finding the Fourth Proportional to 21,970.09, 30,316.56 and 12,277.76

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Solution

The fourth proportional to 21,970.09, 30,316.56 and 12,277.76 is: 16,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.09 : 30,316.56 = 12,277.76 : x
  2. Step 2: Convert to fraction form
    21,970.09/30,316.56 = 12,277.76/x
  3. Step 3: Cross multiply
    21,970.09x = 30,316.56 × 12,277.76
  4. Step 4: Simplify right side
    21,970.09x = 372,219,447.71
  5. Step 5: Solve for x
    x = 372,219,447.71/21,970.09
  6. Step 6: Final answer
    x = 16,942.10

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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.