Home / 20,497.78-28,281.72-12,537.10

Finding the Fourth Proportional to 20,497.78, 28,281.72 and 12,537.10

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Solution

The fourth proportional to 20,497.78, 28,281.72 and 12,537.10 is: 17,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.78 : 28,281.72 = 12,537.10 : x
  2. Step 2: Convert to fraction form
    20,497.78/28,281.72 = 12,537.10/x
  3. Step 3: Cross multiply
    20,497.78x = 28,281.72 × 12,537.10
  4. Step 4: Simplify right side
    20,497.78x = 354,570,751.81
  5. Step 5: Solve for x
    x = 354,570,751.81/20,497.78
  6. Step 6: Final answer
    x = 17,298.01

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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.