Home / 28,011.60-42,017.40-14,857.20

Finding the Fourth Proportional to 28,011.60, 42,017.40 and 14,857.20

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Solution

The fourth proportional to 28,011.60, 42,017.40 and 14,857.20 is: 22,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.60 : 42,017.40 = 14,857.20 : x
  2. Step 2: Convert to fraction form
    28,011.60/42,017.40 = 14,857.20/x
  3. Step 3: Cross multiply
    28,011.60x = 42,017.40 × 14,857.20
  4. Step 4: Simplify right side
    28,011.60x = 624,260,915.28
  5. Step 5: Solve for x
    x = 624,260,915.28/28,011.60
  6. Step 6: Final answer
    x = 22,285.80

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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.