Home / 15,356.41-21,190.98-8,642.32

Finding the Fourth Proportional to 15,356.41, 21,190.98 and 8,642.32

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Solution

The fourth proportional to 15,356.41, 21,190.98 and 8,642.32 is: 11,925.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.41 : 21,190.98 = 8,642.32 : x
  2. Step 2: Convert to fraction form
    15,356.41/21,190.98 = 8,642.32/x
  3. Step 3: Cross multiply
    15,356.41x = 21,190.98 × 8,642.32
  4. Step 4: Simplify right side
    15,356.41x = 183,139,230.27
  5. Step 5: Solve for x
    x = 183,139,230.27/15,356.41
  6. Step 6: Final answer
    x = 11,925.91

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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.