Home / 12,437.40-18,656.10-4,118.70

Finding the Fourth Proportional to 12,437.40, 18,656.10 and 4,118.70

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Solution

The fourth proportional to 12,437.40, 18,656.10 and 4,118.70 is: 6,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,437.40 : 18,656.10 = 4,118.70 : x
  2. Step 2: Convert to fraction form
    12,437.40/18,656.10 = 4,118.70/x
  3. Step 3: Cross multiply
    12,437.40x = 18,656.10 × 4,118.70
  4. Step 4: Simplify right side
    12,437.40x = 76,838,879.07
  5. Step 5: Solve for x
    x = 76,838,879.07/12,437.40
  6. Step 6: Final answer
    x = 6,178.05

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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.