Home / 14,688.37-20,267.90-8,638.88

Finding the Fourth Proportional to 14,688.37, 20,267.90 and 8,638.88

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Solution

The fourth proportional to 14,688.37, 20,267.90 and 8,638.88 is: 11,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.37 : 20,267.90 = 8,638.88 : x
  2. Step 2: Convert to fraction form
    14,688.37/20,267.90 = 8,638.88/x
  3. Step 3: Cross multiply
    14,688.37x = 20,267.90 × 8,638.88
  4. Step 4: Simplify right side
    14,688.37x = 175,091,955.95
  5. Step 5: Solve for x
    x = 175,091,955.95/14,688.37
  6. Step 6: Final answer
    x = 11,920.45

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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.