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Finding the Fourth Proportional to 15,070.32, 20,796.48 and 8,356.02

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Solution

The fourth proportional to 15,070.32, 20,796.48 and 8,356.02 is: 11,531.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.32 : 20,796.48 = 8,356.02 : x
  2. Step 2: Convert to fraction form
    15,070.32/20,796.48 = 8,356.02/x
  3. Step 3: Cross multiply
    15,070.32x = 20,796.48 × 8,356.02
  4. Step 4: Simplify right side
    15,070.32x = 173,775,802.81
  5. Step 5: Solve for x
    x = 173,775,802.81/15,070.32
  6. Step 6: Final answer
    x = 11,531.00

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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.