Home / 15,243.96-21,034.58-8,870.07

Finding the Fourth Proportional to 15,243.96, 21,034.58 and 8,870.07

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Solution

The fourth proportional to 15,243.96, 21,034.58 and 8,870.07 is: 12,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.96 : 21,034.58 = 8,870.07 : x
  2. Step 2: Convert to fraction form
    15,243.96/21,034.58 = 8,870.07/x
  3. Step 3: Cross multiply
    15,243.96x = 21,034.58 × 8,870.07
  4. Step 4: Simplify right side
    15,243.96x = 186,578,152.67
  5. Step 5: Solve for x
    x = 186,578,152.67/15,243.96
  6. Step 6: Final answer
    x = 12,239.48

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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.