Home / 15,690.06-21,652.47-8,975.61

Finding the Fourth Proportional to 15,690.06, 21,652.47 and 8,975.61

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Solution

The fourth proportional to 15,690.06, 21,652.47 and 8,975.61 is: 12,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.06 : 21,652.47 = 8,975.61 : x
  2. Step 2: Convert to fraction form
    15,690.06/21,652.47 = 8,975.61/x
  3. Step 3: Cross multiply
    15,690.06x = 21,652.47 × 8,975.61
  4. Step 4: Simplify right side
    15,690.06x = 194,344,126.26
  5. Step 5: Solve for x
    x = 194,344,126.26/15,690.06
  6. Step 6: Final answer
    x = 12,386.45

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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.