Home / 18,830.48-28,242.68-7,140.88

Finding the Fourth Proportional to 18,830.48, 28,242.68 and 7,140.88

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Solution

The fourth proportional to 18,830.48, 28,242.68 and 7,140.88 is: 10,710.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.48 : 28,242.68 = 7,140.88 : x
  2. Step 2: Convert to fraction form
    18,830.48/28,242.68 = 7,140.88/x
  3. Step 3: Cross multiply
    18,830.48x = 28,242.68 × 7,140.88
  4. Step 4: Simplify right side
    18,830.48x = 201,677,588.76
  5. Step 5: Solve for x
    x = 201,677,588.76/18,830.48
  6. Step 6: Final answer
    x = 10,710.17

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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.