Home / 11,869.60-17,782.80-9,666.40

Finding the Fourth Proportional to 11,869.60, 17,782.80 and 9,666.40

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Solution

The fourth proportional to 11,869.60, 17,782.80 and 9,666.40 is: 14,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.60 : 17,782.80 = 9,666.40 : x
  2. Step 2: Convert to fraction form
    11,869.60/17,782.80 = 9,666.40/x
  3. Step 3: Cross multiply
    11,869.60x = 17,782.80 × 9,666.40
  4. Step 4: Simplify right side
    11,869.60x = 171,895,657.92
  5. Step 5: Solve for x
    x = 171,895,657.92/11,869.60
  6. Step 6: Final answer
    x = 14,482.01

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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.