Home / 30,428.90-45,632.28-11,699.30

Finding the Fourth Proportional to 30,428.90, 45,632.28 and 11,699.30

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Solution

The fourth proportional to 30,428.90, 45,632.28 and 11,699.30 is: 17,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.90 : 45,632.28 = 11,699.30 : x
  2. Step 2: Convert to fraction form
    30,428.90/45,632.28 = 11,699.30/x
  3. Step 3: Cross multiply
    30,428.90x = 45,632.28 × 11,699.30
  4. Step 4: Simplify right side
    30,428.90x = 533,865,733.40
  5. Step 5: Solve for x
    x = 533,865,733.40/30,428.90
  6. Step 6: Final answer
    x = 17,544.69

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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.