Home / 30,645.55-45,967.41-8,460.28

Finding the Fourth Proportional to 30,645.55, 45,967.41 and 8,460.28

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Solution

The fourth proportional to 30,645.55, 45,967.41 and 8,460.28 is: 12,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.55 : 45,967.41 = 8,460.28 : x
  2. Step 2: Convert to fraction form
    30,645.55/45,967.41 = 8,460.28/x
  3. Step 3: Cross multiply
    30,645.55x = 45,967.41 × 8,460.28
  4. Step 4: Simplify right side
    30,645.55x = 388,897,159.47
  5. Step 5: Solve for x
    x = 388,897,159.47/30,645.55
  6. Step 6: Final answer
    x = 12,690.17

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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.