Home / 20,210.40-27,888.71-12,257.01

Finding the Fourth Proportional to 20,210.40, 27,888.71 and 12,257.01

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Solution

The fourth proportional to 20,210.40, 27,888.71 and 12,257.01 is: 16,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.40 : 27,888.71 = 12,257.01 : x
  2. Step 2: Convert to fraction form
    20,210.40/27,888.71 = 12,257.01/x
  3. Step 3: Cross multiply
    20,210.40x = 27,888.71 × 12,257.01
  4. Step 4: Simplify right side
    20,210.40x = 341,832,136.07
  5. Step 5: Solve for x
    x = 341,832,136.07/20,210.40
  6. Step 6: Final answer
    x = 16,913.67

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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.