Home / 15,368.54-21,208.02-8,562.40

Finding the Fourth Proportional to 15,368.54, 21,208.02 and 8,562.40

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Solution

The fourth proportional to 15,368.54, 21,208.02 and 8,562.40 is: 11,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.54 : 21,208.02 = 8,562.40 : x
  2. Step 2: Convert to fraction form
    15,368.54/21,208.02 = 8,562.40/x
  3. Step 3: Cross multiply
    15,368.54x = 21,208.02 × 8,562.40
  4. Step 4: Simplify right side
    15,368.54x = 181,591,507.64
  5. Step 5: Solve for x
    x = 181,591,507.64/15,368.54
  6. Step 6: Final answer
    x = 11,815.79

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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.