Home / 15,447.60-21,335.21-10,403.06

Finding the Fourth Proportional to 15,447.60, 21,335.21 and 10,403.06

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Solution

The fourth proportional to 15,447.60, 21,335.21 and 10,403.06 is: 14,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.60 : 21,335.21 = 10,403.06 : x
  2. Step 2: Convert to fraction form
    15,447.60/21,335.21 = 10,403.06/x
  3. Step 3: Cross multiply
    15,447.60x = 21,335.21 × 10,403.06
  4. Step 4: Simplify right side
    15,447.60x = 221,951,311.05
  5. Step 5: Solve for x
    x = 221,951,311.05/15,447.60
  6. Step 6: Final answer
    x = 14,368.01

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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.