Home / 30,915.10-42,662.86-17,486.08

Finding the Fourth Proportional to 30,915.10, 42,662.86 and 17,486.08

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Solution

The fourth proportional to 30,915.10, 42,662.86 and 17,486.08 is: 24,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.10 : 42,662.86 = 17,486.08 : x
  2. Step 2: Convert to fraction form
    30,915.10/42,662.86 = 17,486.08/x
  3. Step 3: Cross multiply
    30,915.10x = 42,662.86 × 17,486.08
  4. Step 4: Simplify right side
    30,915.10x = 746,006,182.99
  5. Step 5: Solve for x
    x = 746,006,182.99/30,915.10
  6. Step 6: Final answer
    x = 24,130.80

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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.