Home / 21,015.47-29,000.30-12,062.76

Finding the Fourth Proportional to 21,015.47, 29,000.30 and 12,062.76

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Solution

The fourth proportional to 21,015.47, 29,000.30 and 12,062.76 is: 16,646.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.47 : 29,000.30 = 12,062.76 : x
  2. Step 2: Convert to fraction form
    21,015.47/29,000.30 = 12,062.76/x
  3. Step 3: Cross multiply
    21,015.47x = 29,000.30 × 12,062.76
  4. Step 4: Simplify right side
    21,015.47x = 349,823,598.51
  5. Step 5: Solve for x
    x = 349,823,598.51/21,015.47
  6. Step 6: Final answer
    x = 16,646.01

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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.