Home / 21,776.76-30,051.93-12,345.32

Finding the Fourth Proportional to 21,776.76, 30,051.93 and 12,345.32

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Solution

The fourth proportional to 21,776.76, 30,051.93 and 12,345.32 is: 17,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.76 : 30,051.93 = 12,345.32 : x
  2. Step 2: Convert to fraction form
    21,776.76/30,051.93 = 12,345.32/x
  3. Step 3: Cross multiply
    21,776.76x = 30,051.93 × 12,345.32
  4. Step 4: Simplify right side
    21,776.76x = 371,000,542.21
  5. Step 5: Solve for x
    x = 371,000,542.21/21,776.76
  6. Step 6: Final answer
    x = 17,036.54

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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.