Home / 21,548.61-29,727.30-15,570.81

Finding the Fourth Proportional to 21,548.61, 29,727.30 and 15,570.81

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Solution

The fourth proportional to 21,548.61, 29,727.30 and 15,570.81 is: 21,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.61 : 29,727.30 = 15,570.81 : x
  2. Step 2: Convert to fraction form
    21,548.61/29,727.30 = 15,570.81/x
  3. Step 3: Cross multiply
    21,548.61x = 29,727.30 × 15,570.81
  4. Step 4: Simplify right side
    21,548.61x = 462,878,140.11
  5. Step 5: Solve for x
    x = 462,878,140.11/21,548.61
  6. Step 6: Final answer
    x = 21,480.65

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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.