Home / 14,159.60-21,239.40-4,298.40

Finding the Fourth Proportional to 14,159.60, 21,239.40 and 4,298.40

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Solution

The fourth proportional to 14,159.60, 21,239.40 and 4,298.40 is: 6,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.60 : 21,239.40 = 4,298.40 : x
  2. Step 2: Convert to fraction form
    14,159.60/21,239.40 = 4,298.40/x
  3. Step 3: Cross multiply
    14,159.60x = 21,239.40 × 4,298.40
  4. Step 4: Simplify right side
    14,159.60x = 91,295,436.96
  5. Step 5: Solve for x
    x = 91,295,436.96/14,159.60
  6. Step 6: Final answer
    x = 6,447.60

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1.5x scale

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.