Home / 30,008.04-45,011.28-7,820.64

Finding the Fourth Proportional to 30,008.04, 45,011.28 and 7,820.64

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Solution

The fourth proportional to 30,008.04, 45,011.28 and 7,820.64 is: 11,730.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.04 : 45,011.28 = 7,820.64 : x
  2. Step 2: Convert to fraction form
    30,008.04/45,011.28 = 7,820.64/x
  3. Step 3: Cross multiply
    30,008.04x = 45,011.28 × 7,820.64
  4. Step 4: Simplify right side
    30,008.04x = 352,017,016.82
  5. Step 5: Solve for x
    x = 352,017,016.82/30,008.04
  6. Step 6: Final answer
    x = 11,730.76

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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.