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Finding the Fourth Proportional to 30,525.71, 42,124.50 and 16,913.18

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Solution

The fourth proportional to 30,525.71, 42,124.50 and 16,913.18 is: 23,339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,525.71 : 42,124.50 = 16,913.18 : x
  2. Step 2: Convert to fraction form
    30,525.71/42,124.50 = 16,913.18/x
  3. Step 3: Cross multiply
    30,525.71x = 42,124.50 × 16,913.18
  4. Step 4: Simplify right side
    30,525.71x = 712,459,356.22
  5. Step 5: Solve for x
    x = 712,459,356.22/30,525.71
  6. Step 6: Final answer
    x = 23,339.65

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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.