Home / 18,281.64-25,228.72-9,898.12

Finding the Fourth Proportional to 18,281.64, 25,228.72 and 9,898.12

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Solution

The fourth proportional to 18,281.64, 25,228.72 and 9,898.12 is: 13,659.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.64 : 25,228.72 = 9,898.12 : x
  2. Step 2: Convert to fraction form
    18,281.64/25,228.72 = 9,898.12/x
  3. Step 3: Cross multiply
    18,281.64x = 25,228.72 × 9,898.12
  4. Step 4: Simplify right side
    18,281.64x = 249,716,898.01
  5. Step 5: Solve for x
    x = 249,716,898.01/18,281.64
  6. Step 6: Final answer
    x = 13,659.44

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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.