Home / 13,637.18-18,818.98-8,921.36

Finding the Fourth Proportional to 13,637.18, 18,818.98 and 8,921.36

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Solution

The fourth proportional to 13,637.18, 18,818.98 and 8,921.36 is: 12,311.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.18 : 18,818.98 = 8,921.36 : x
  2. Step 2: Convert to fraction form
    13,637.18/18,818.98 = 8,921.36/x
  3. Step 3: Cross multiply
    13,637.18x = 18,818.98 × 8,921.36
  4. Step 4: Simplify right side
    13,637.18x = 167,890,756.71
  5. Step 5: Solve for x
    x = 167,890,756.71/13,637.18
  6. Step 6: Final answer
    x = 12,311.26

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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.