Home / 20,984.34-28,957.29-11,551.08

Finding the Fourth Proportional to 20,984.34, 28,957.29 and 11,551.08

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Solution

The fourth proportional to 20,984.34, 28,957.29 and 11,551.08 is: 15,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.34 : 28,957.29 = 11,551.08 : x
  2. Step 2: Convert to fraction form
    20,984.34/28,957.29 = 11,551.08/x
  3. Step 3: Cross multiply
    20,984.34x = 28,957.29 × 11,551.08
  4. Step 4: Simplify right side
    20,984.34x = 334,487,973.37
  5. Step 5: Solve for x
    x = 334,487,973.37/20,984.34
  6. Step 6: Final answer
    x = 15,939.89

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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.