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Finding the Fourth Proportional to 28,460, 39,274.72 and 16,530.24

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Solution

The fourth proportional to 28,460, 39,274.72 and 16,530.24 is: 22,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460 : 39,274.72 = 16,530.24 : x
  2. Step 2: Convert to fraction form
    28,460/39,274.72 = 16,530.24/x
  3. Step 3: Cross multiply
    28,460x = 39,274.72 × 16,530.24
  4. Step 4: Simplify right side
    28,460x = 649,220,547.53
  5. Step 5: Solve for x
    x = 649,220,547.53/28,460
  6. Step 6: Final answer
    x = 22,811.68

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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.