Home / 15,261.79-21,062.61-8,547.31

Finding the Fourth Proportional to 15,261.79, 21,062.61 and 8,547.31

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Solution

The fourth proportional to 15,261.79, 21,062.61 and 8,547.31 is: 11,796.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.79 : 21,062.61 = 8,547.31 : x
  2. Step 2: Convert to fraction form
    15,261.79/21,062.61 = 8,547.31/x
  3. Step 3: Cross multiply
    15,261.79x = 21,062.61 × 8,547.31
  4. Step 4: Simplify right side
    15,261.79x = 180,028,657.08
  5. Step 5: Solve for x
    x = 180,028,657.08/15,261.79
  6. Step 6: Final answer
    x = 11,796.04

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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.