Home / 34,387.12-47,476.32-21,657.64

Finding the Fourth Proportional to 34,387.12, 47,476.32 and 21,657.64

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Solution

The fourth proportional to 34,387.12, 47,476.32 and 21,657.64 is: 29,901.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,387.12 : 47,476.32 = 21,657.64 : x
  2. Step 2: Convert to fraction form
    34,387.12/47,476.32 = 21,657.64/x
  3. Step 3: Cross multiply
    34,387.12x = 47,476.32 × 21,657.64
  4. Step 4: Simplify right side
    34,387.12x = 1,028,225,047.08
  5. Step 5: Solve for x
    x = 1,028,225,047.08/34,387.12
  6. Step 6: Final answer
    x = 29,901.46

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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.