Home / 28,012.23-42,014.16-9,305.28

Finding the Fourth Proportional to 28,012.23, 42,014.16 and 9,305.28

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Solution

The fourth proportional to 28,012.23, 42,014.16 and 9,305.28 is: 13,956.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.23 : 42,014.16 = 9,305.28 : x
  2. Step 2: Convert to fraction form
    28,012.23/42,014.16 = 9,305.28/x
  3. Step 3: Cross multiply
    28,012.23x = 42,014.16 × 9,305.28
  4. Step 4: Simplify right side
    28,012.23x = 390,953,522.76
  5. Step 5: Solve for x
    x = 390,953,522.76/28,012.23
  6. Step 6: Final answer
    x = 13,956.53

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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.