Home / 28,937.12-39,918.80-19,489.28

Finding the Fourth Proportional to 28,937.12, 39,918.80 and 19,489.28

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Solution

The fourth proportional to 28,937.12, 39,918.80 and 19,489.28 is: 26,885.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.12 : 39,918.80 = 19,489.28 : x
  2. Step 2: Convert to fraction form
    28,937.12/39,918.80 = 19,489.28/x
  3. Step 3: Cross multiply
    28,937.12x = 39,918.80 × 19,489.28
  4. Step 4: Simplify right side
    28,937.12x = 777,988,670.46
  5. Step 5: Solve for x
    x = 777,988,670.46/28,937.12
  6. Step 6: Final answer
    x = 26,885.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.