Home / 15,440.61-21,296.79-9,776.28

Finding the Fourth Proportional to 15,440.61, 21,296.79 and 9,776.28

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Solution

The fourth proportional to 15,440.61, 21,296.79 and 9,776.28 is: 13,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.61 : 21,296.79 = 9,776.28 : x
  2. Step 2: Convert to fraction form
    15,440.61/21,296.79 = 9,776.28/x
  3. Step 3: Cross multiply
    15,440.61x = 21,296.79 × 9,776.28
  4. Step 4: Simplify right side
    15,440.61x = 208,203,382.14
  5. Step 5: Solve for x
    x = 208,203,382.14/15,440.61
  6. Step 6: Final answer
    x = 13,484.14

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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.