Home / 21,130.05-31,652.70-10,047.42

Finding the Fourth Proportional to 21,130.05, 31,652.70 and 10,047.42

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Solution

The fourth proportional to 21,130.05, 31,652.70 and 10,047.42 is: 15,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.05 : 31,652.70 = 10,047.42 : x
  2. Step 2: Convert to fraction form
    21,130.05/31,652.70 = 10,047.42/x
  3. Step 3: Cross multiply
    21,130.05x = 31,652.70 × 10,047.42
  4. Step 4: Simplify right side
    21,130.05x = 318,027,971.03
  5. Step 5: Solve for x
    x = 318,027,971.03/21,130.05
  6. Step 6: Final answer
    x = 15,050.98

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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.