Home / 13,618.01-20,428.26-5,298.65

Finding the Fourth Proportional to 13,618.01, 20,428.26 and 5,298.65

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Solution

The fourth proportional to 13,618.01, 20,428.26 and 5,298.65 is: 7,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.01 : 20,428.26 = 5,298.65 : x
  2. Step 2: Convert to fraction form
    13,618.01/20,428.26 = 5,298.65/x
  3. Step 3: Cross multiply
    13,618.01x = 20,428.26 × 5,298.65
  4. Step 4: Simplify right side
    13,618.01x = 108,242,097.71
  5. Step 5: Solve for x
    x = 108,242,097.71/13,618.01
  6. Step 6: Final answer
    x = 7,948.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.