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Finding the Fourth Proportional to 29,990.94, 45,013.98 and 15,210.47

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Solution

The fourth proportional to 29,990.94, 45,013.98 and 15,210.47 is: 22,829.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,990.94 : 45,013.98 = 15,210.47 : x
  2. Step 2: Convert to fraction form
    29,990.94/45,013.98 = 15,210.47/x
  3. Step 3: Cross multiply
    29,990.94x = 45,013.98 × 15,210.47
  4. Step 4: Simplify right side
    29,990.94x = 684,683,567.30
  5. Step 5: Solve for x
    x = 684,683,567.30/29,990.94
  6. Step 6: Final answer
    x = 22,829.68

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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.