Home / 14,715.51-20,287.53-9,991.59

Finding the Fourth Proportional to 14,715.51, 20,287.53 and 9,991.59

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Solution

The fourth proportional to 14,715.51, 20,287.53 and 9,991.59 is: 13,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,715.51 : 20,287.53 = 9,991.59 : x
  2. Step 2: Convert to fraction form
    14,715.51/20,287.53 = 9,991.59/x
  3. Step 3: Cross multiply
    14,715.51x = 20,287.53 × 9,991.59
  4. Step 4: Simplify right side
    14,715.51x = 202,704,681.87
  5. Step 5: Solve for x
    x = 202,704,681.87/14,715.51
  6. Step 6: Final answer
    x = 13,774.90

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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.