Home / 11,711.40-16,165.38-9,637.80

Finding the Fourth Proportional to 11,711.40, 16,165.38 and 9,637.80

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Solution

The fourth proportional to 11,711.40, 16,165.38 and 9,637.80 is: 13,303.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.40 : 16,165.38 = 9,637.80 : x
  2. Step 2: Convert to fraction form
    11,711.40/16,165.38 = 9,637.80/x
  3. Step 3: Cross multiply
    11,711.40x = 16,165.38 × 9,637.80
  4. Step 4: Simplify right side
    11,711.40x = 155,798,699.36
  5. Step 5: Solve for x
    x = 155,798,699.36/11,711.40
  6. Step 6: Final answer
    x = 13,303.17

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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.