Home / 15,441.61-21,298.17-9,777.28

Finding the Fourth Proportional to 15,441.61, 21,298.17 and 9,777.28

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Solution

The fourth proportional to 15,441.61, 21,298.17 and 9,777.28 is: 13,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.61 : 21,298.17 = 9,777.28 : x
  2. Step 2: Convert to fraction form
    15,441.61/21,298.17 = 9,777.28/x
  3. Step 3: Cross multiply
    15,441.61x = 21,298.17 × 9,777.28
  4. Step 4: Simplify right side
    15,441.61x = 208,238,171.58
  5. Step 5: Solve for x
    x = 208,238,171.58/15,441.61
  6. Step 6: Final answer
    x = 13,485.52

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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.