Home / 14,988.47-20,687.10-8,619.51

Finding the Fourth Proportional to 14,988.47, 20,687.10 and 8,619.51

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Solution

The fourth proportional to 14,988.47, 20,687.10 and 8,619.51 is: 11,896.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.47 : 20,687.10 = 8,619.51 : x
  2. Step 2: Convert to fraction form
    14,988.47/20,687.10 = 8,619.51/x
  3. Step 3: Cross multiply
    14,988.47x = 20,687.10 × 8,619.51
  4. Step 4: Simplify right side
    14,988.47x = 178,312,697.64
  5. Step 5: Solve for x
    x = 178,312,697.64/14,988.47
  6. Step 6: Final answer
    x = 11,896.66

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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.