Home / 15,557.77-21,471.59-9,823.56

Finding the Fourth Proportional to 15,557.77, 21,471.59 and 9,823.56

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Solution

The fourth proportional to 15,557.77, 21,471.59 and 9,823.56 is: 13,557.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.77 : 21,471.59 = 9,823.56 : x
  2. Step 2: Convert to fraction form
    15,557.77/21,471.59 = 9,823.56/x
  3. Step 3: Cross multiply
    15,557.77x = 21,471.59 × 9,823.56
  4. Step 4: Simplify right side
    15,557.77x = 210,927,452.66
  5. Step 5: Solve for x
    x = 210,927,452.66/15,557.77
  6. Step 6: Final answer
    x = 13,557.69

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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.