Home / 14,390.60-21,577.10-5,615.40

Finding the Fourth Proportional to 14,390.60, 21,577.10 and 5,615.40

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Solution

The fourth proportional to 14,390.60, 21,577.10 and 5,615.40 is: 8,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.60 : 21,577.10 = 5,615.40 : x
  2. Step 2: Convert to fraction form
    14,390.60/21,577.10 = 5,615.40/x
  3. Step 3: Cross multiply
    14,390.60x = 21,577.10 × 5,615.40
  4. Step 4: Simplify right side
    14,390.60x = 121,164,047.34
  5. Step 5: Solve for x
    x = 121,164,047.34/14,390.60
  6. Step 6: Final answer
    x = 8,419.67

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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.