Home / 20,730.15-31,095.36-7,577.10

Finding the Fourth Proportional to 20,730.15, 31,095.36 and 7,577.10

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Solution

The fourth proportional to 20,730.15, 31,095.36 and 7,577.10 is: 11,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.15 : 31,095.36 = 7,577.10 : x
  2. Step 2: Convert to fraction form
    20,730.15/31,095.36 = 7,577.10/x
  3. Step 3: Cross multiply
    20,730.15x = 31,095.36 × 7,577.10
  4. Step 4: Simplify right side
    20,730.15x = 235,612,652.26
  5. Step 5: Solve for x
    x = 235,612,652.26/20,730.15
  6. Step 6: Final answer
    x = 11,365.70

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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.