Home / 42,855.64-64,283.10-11,690.92

Finding the Fourth Proportional to 42,855.64, 64,283.10 and 11,690.92

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Solution

The fourth proportional to 42,855.64, 64,283.10 and 11,690.92 is: 17,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.64 : 64,283.10 = 11,690.92 : x
  2. Step 2: Convert to fraction form
    42,855.64/64,283.10 = 11,690.92/x
  3. Step 3: Cross multiply
    42,855.64x = 64,283.10 × 11,690.92
  4. Step 4: Simplify right side
    42,855.64x = 751,528,579.45
  5. Step 5: Solve for x
    x = 751,528,579.45/42,855.64
  6. Step 6: Final answer
    x = 17,536.28

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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.