Home / 20,995.65-28,968.18-14,615.07

Finding the Fourth Proportional to 20,995.65, 28,968.18 and 14,615.07

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Solution

The fourth proportional to 20,995.65, 28,968.18 and 14,615.07 is: 20,164.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.65 : 28,968.18 = 14,615.07 : x
  2. Step 2: Convert to fraction form
    20,995.65/28,968.18 = 14,615.07/x
  3. Step 3: Cross multiply
    20,995.65x = 28,968.18 × 14,615.07
  4. Step 4: Simplify right side
    20,995.65x = 423,371,978.47
  5. Step 5: Solve for x
    x = 423,371,978.47/20,995.65
  6. Step 6: Final answer
    x = 20,164.75

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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.