Home / 19,607.69-29,403.74-7,120.90

Finding the Fourth Proportional to 19,607.69, 29,403.74 and 7,120.90

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Solution

The fourth proportional to 19,607.69, 29,403.74 and 7,120.90 is: 10,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,607.69 : 29,403.74 = 7,120.90 : x
  2. Step 2: Convert to fraction form
    19,607.69/29,403.74 = 7,120.90/x
  3. Step 3: Cross multiply
    19,607.69x = 29,403.74 × 7,120.90
  4. Step 4: Simplify right side
    19,607.69x = 209,381,036.46
  5. Step 5: Solve for x
    x = 209,381,036.46/19,607.69
  6. Step 6: Final answer
    x = 10,678.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.