Home / 42,869.04-64,312.74-13,286.22

Finding the Fourth Proportional to 42,869.04, 64,312.74 and 13,286.22

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Solution

The fourth proportional to 42,869.04, 64,312.74 and 13,286.22 is: 19,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,869.04 : 64,312.74 = 13,286.22 : x
  2. Step 2: Convert to fraction form
    42,869.04/64,312.74 = 13,286.22/x
  3. Step 3: Cross multiply
    42,869.04x = 64,312.74 × 13,286.22
  4. Step 4: Simplify right side
    42,869.04x = 854,473,212.44
  5. Step 5: Solve for x
    x = 854,473,212.44/42,869.04
  6. Step 6: Final answer
    x = 19,932.18

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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.