Home / 21,026.59-31,548.89-6,988.48

Finding the Fourth Proportional to 21,026.59, 31,548.89 and 6,988.48

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Solution

The fourth proportional to 21,026.59, 31,548.89 and 6,988.48 is: 10,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.59 : 31,548.89 = 6,988.48 : x
  2. Step 2: Convert to fraction form
    21,026.59/31,548.89 = 6,988.48/x
  3. Step 3: Cross multiply
    21,026.59x = 31,548.89 × 6,988.48
  4. Step 4: Simplify right side
    21,026.59x = 220,478,725.39
  5. Step 5: Solve for x
    x = 220,478,725.39/21,026.59
  6. Step 6: Final answer
    x = 10,485.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.