Home / 13,488.41-20,132.74-12,657.35

Finding the Fourth Proportional to 13,488.41, 20,132.74 and 12,657.35

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Solution

The fourth proportional to 13,488.41, 20,132.74 and 12,657.35 is: 18,892.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.41 : 20,132.74 = 12,657.35 : x
  2. Step 2: Convert to fraction form
    13,488.41/20,132.74 = 12,657.35/x
  3. Step 3: Cross multiply
    13,488.41x = 20,132.74 × 12,657.35
  4. Step 4: Simplify right side
    13,488.41x = 254,827,073.35
  5. Step 5: Solve for x
    x = 254,827,073.35/13,488.41
  6. Step 6: Final answer
    x = 18,892.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.