Home / 20,315.34-30,484.65-10,955.32

Finding the Fourth Proportional to 20,315.34, 30,484.65 and 10,955.32

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Solution

The fourth proportional to 20,315.34, 30,484.65 and 10,955.32 is: 16,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.34 : 30,484.65 = 10,955.32 : x
  2. Step 2: Convert to fraction form
    20,315.34/30,484.65 = 10,955.32/x
  3. Step 3: Cross multiply
    20,315.34x = 30,484.65 × 10,955.32
  4. Step 4: Simplify right side
    20,315.34x = 333,968,943.41
  5. Step 5: Solve for x
    x = 333,968,943.41/20,315.34
  6. Step 6: Final answer
    x = 16,439.25

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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.