Home / 28,030.44-38,681.85-15,455.20

Finding the Fourth Proportional to 28,030.44, 38,681.85 and 15,455.20

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Solution

The fourth proportional to 28,030.44, 38,681.85 and 15,455.20 is: 21,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.44 : 38,681.85 = 15,455.20 : x
  2. Step 2: Convert to fraction form
    28,030.44/38,681.85 = 15,455.20/x
  3. Step 3: Cross multiply
    28,030.44x = 38,681.85 × 15,455.20
  4. Step 4: Simplify right side
    28,030.44x = 597,835,728.12
  5. Step 5: Solve for x
    x = 597,835,728.12/28,030.44
  6. Step 6: Final answer
    x = 21,328.09

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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.