Home / 30,207.72-45,312.12-10,486.92

Finding the Fourth Proportional to 30,207.72, 45,312.12 and 10,486.92

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Solution

The fourth proportional to 30,207.72, 45,312.12 and 10,486.92 is: 15,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.72 : 45,312.12 = 10,486.92 : x
  2. Step 2: Convert to fraction form
    30,207.72/45,312.12 = 10,486.92/x
  3. Step 3: Cross multiply
    30,207.72x = 45,312.12 × 10,486.92
  4. Step 4: Simplify right side
    30,207.72x = 475,184,577.47
  5. Step 5: Solve for x
    x = 475,184,577.47/30,207.72
  6. Step 6: Final answer
    x = 15,730.57

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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.