Home / 9,990.16-14,985.24-3,416.40

Finding the Fourth Proportional to 9,990.16, 14,985.24 and 3,416.40

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Solution

The fourth proportional to 9,990.16, 14,985.24 and 3,416.40 is: 5,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.16 : 14,985.24 = 3,416.40 : x
  2. Step 2: Convert to fraction form
    9,990.16/14,985.24 = 3,416.40/x
  3. Step 3: Cross multiply
    9,990.16x = 14,985.24 × 3,416.40
  4. Step 4: Simplify right side
    9,990.16x = 51,195,573.94
  5. Step 5: Solve for x
    x = 51,195,573.94/9,990.16
  6. Step 6: Final answer
    x = 5,124.60

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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.