Home / 40,040.04-55,254.18-21,890.04

Finding the Fourth Proportional to 40,040.04, 55,254.18 and 21,890.04

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Solution

The fourth proportional to 40,040.04, 55,254.18 and 21,890.04 is: 30,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,040.04 : 55,254.18 = 21,890.04 : x
  2. Step 2: Convert to fraction form
    40,040.04/55,254.18 = 21,890.04/x
  3. Step 3: Cross multiply
    40,040.04x = 55,254.18 × 21,890.04
  4. Step 4: Simplify right side
    40,040.04x = 1,209,516,210.37
  5. Step 5: Solve for x
    x = 1,209,516,210.37/40,040.04
  6. Step 6: Final answer
    x = 30,207.67

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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.