Home / 15,518.13-21,416.59-9,146.77

Finding the Fourth Proportional to 15,518.13, 21,416.59 and 9,146.77

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Solution

The fourth proportional to 15,518.13, 21,416.59 and 9,146.77 is: 12,623.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.13 : 21,416.59 = 9,146.77 : x
  2. Step 2: Convert to fraction form
    15,518.13/21,416.59 = 9,146.77/x
  3. Step 3: Cross multiply
    15,518.13x = 21,416.59 × 9,146.77
  4. Step 4: Simplify right side
    15,518.13x = 195,892,622.91
  5. Step 5: Solve for x
    x = 195,892,622.91/15,518.13
  6. Step 6: Final answer
    x = 12,623.47

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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.