Home / 15,812.02-21,820.40-8,738.29

Finding the Fourth Proportional to 15,812.02, 21,820.40 and 8,738.29

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Solution

The fourth proportional to 15,812.02, 21,820.40 and 8,738.29 is: 12,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.02 : 21,820.40 = 8,738.29 : x
  2. Step 2: Convert to fraction form
    15,812.02/21,820.40 = 8,738.29/x
  3. Step 3: Cross multiply
    15,812.02x = 21,820.40 × 8,738.29
  4. Step 4: Simplify right side
    15,812.02x = 190,672,983.12
  5. Step 5: Solve for x
    x = 190,672,983.12/15,812.02
  6. Step 6: Final answer
    x = 12,058.74

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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.