Home / 15,730.02-21,738.51-12,892.86

Finding the Fourth Proportional to 15,730.02, 21,738.51 and 12,892.86

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Solution

The fourth proportional to 15,730.02, 21,738.51 and 12,892.86 is: 17,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.02 : 21,738.51 = 12,892.86 : x
  2. Step 2: Convert to fraction form
    15,730.02/21,738.51 = 12,892.86/x
  3. Step 3: Cross multiply
    15,730.02x = 21,738.51 × 12,892.86
  4. Step 4: Simplify right side
    15,730.02x = 280,271,566.04
  5. Step 5: Solve for x
    x = 280,271,566.04/15,730.02
  6. Step 6: Final answer
    x = 17,817.62

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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.