Home / 20,968.69-28,931.05-14,588.12

Finding the Fourth Proportional to 20,968.69, 28,931.05 and 14,588.12

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Solution

The fourth proportional to 20,968.69, 28,931.05 and 14,588.12 is: 20,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.69 : 28,931.05 = 14,588.12 : x
  2. Step 2: Convert to fraction form
    20,968.69/28,931.05 = 14,588.12/x
  3. Step 3: Cross multiply
    20,968.69x = 28,931.05 × 14,588.12
  4. Step 4: Simplify right side
    20,968.69x = 422,049,448.00
  5. Step 5: Solve for x
    x = 422,049,448.00/20,968.69
  6. Step 6: Final answer
    x = 20,127.60

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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.