Home / 20,312.55-28,039.01-18,184.23

Finding the Fourth Proportional to 20,312.55, 28,039.01 and 18,184.23

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Solution

The fourth proportional to 20,312.55, 28,039.01 and 18,184.23 is: 25,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.55 : 28,039.01 = 18,184.23 : x
  2. Step 2: Convert to fraction form
    20,312.55/28,039.01 = 18,184.23/x
  3. Step 3: Cross multiply
    20,312.55x = 28,039.01 × 18,184.23
  4. Step 4: Simplify right side
    20,312.55x = 509,867,715.89
  5. Step 5: Solve for x
    x = 509,867,715.89/20,312.55
  6. Step 6: Final answer
    x = 25,101.12

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Double scale
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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.