Home / 15,405.61-21,259.74-8,332.03

Finding the Fourth Proportional to 15,405.61, 21,259.74 and 8,332.03

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Solution

The fourth proportional to 15,405.61, 21,259.74 and 8,332.03 is: 11,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.61 : 21,259.74 = 8,332.03 : x
  2. Step 2: Convert to fraction form
    15,405.61/21,259.74 = 8,332.03/x
  3. Step 3: Cross multiply
    15,405.61x = 21,259.74 × 8,332.03
  4. Step 4: Simplify right side
    15,405.61x = 177,136,818.05
  5. Step 5: Solve for x
    x = 177,136,818.05/15,405.61
  6. Step 6: Final answer
    x = 11,498.20

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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.