Home / 28,447.65-42,655.28-19,683.45

Finding the Fourth Proportional to 28,447.65, 42,655.28 and 19,683.45

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Solution

The fourth proportional to 28,447.65, 42,655.28 and 19,683.45 is: 29,513.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.65 : 42,655.28 = 19,683.45 : x
  2. Step 2: Convert to fraction form
    28,447.65/42,655.28 = 19,683.45/x
  3. Step 3: Cross multiply
    28,447.65x = 42,655.28 × 19,683.45
  4. Step 4: Simplify right side
    28,447.65x = 839,602,972.70
  5. Step 5: Solve for x
    x = 839,602,972.70/28,447.65
  6. Step 6: Final answer
    x = 29,513.97

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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.