Home / 20,681.51-28,541.03-11,727.32

Finding the Fourth Proportional to 20,681.51, 28,541.03 and 11,727.32

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Solution

The fourth proportional to 20,681.51, 28,541.03 and 11,727.32 is: 16,184.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.51 : 28,541.03 = 11,727.32 : x
  2. Step 2: Convert to fraction form
    20,681.51/28,541.03 = 11,727.32/x
  3. Step 3: Cross multiply
    20,681.51x = 28,541.03 × 11,727.32
  4. Step 4: Simplify right side
    20,681.51x = 334,709,590.60
  5. Step 5: Solve for x
    x = 334,709,590.60/20,681.51
  6. Step 6: Final answer
    x = 16,184.01

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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.