Home / 28,577.04-42,866.28-7,800.72

Finding the Fourth Proportional to 28,577.04, 42,866.28 and 7,800.72

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Solution

The fourth proportional to 28,577.04, 42,866.28 and 7,800.72 is: 11,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.04 : 42,866.28 = 7,800.72 : x
  2. Step 2: Convert to fraction form
    28,577.04/42,866.28 = 7,800.72/x
  3. Step 3: Cross multiply
    28,577.04x = 42,866.28 × 7,800.72
  4. Step 4: Simplify right side
    28,577.04x = 334,387,847.72
  5. Step 5: Solve for x
    x = 334,387,847.72/28,577.04
  6. Step 6: Final answer
    x = 11,701.28

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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.