Home / 21,265.81-29,316.40-14,958.61

Finding the Fourth Proportional to 21,265.81, 29,316.40 and 14,958.61

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Solution

The fourth proportional to 21,265.81, 29,316.40 and 14,958.61 is: 20,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.81 : 29,316.40 = 14,958.61 : x
  2. Step 2: Convert to fraction form
    21,265.81/29,316.40 = 14,958.61/x
  3. Step 3: Cross multiply
    21,265.81x = 29,316.40 × 14,958.61
  4. Step 4: Simplify right side
    21,265.81x = 438,532,594.20
  5. Step 5: Solve for x
    x = 438,532,594.20/21,265.81
  6. Step 6: Final answer
    x = 20,621.49

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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.