Home / 15,448.86-21,310.65-9,478.35

Finding the Fourth Proportional to 15,448.86, 21,310.65 and 9,478.35

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Solution

The fourth proportional to 15,448.86, 21,310.65 and 9,478.35 is: 13,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,448.86 : 21,310.65 = 9,478.35 : x
  2. Step 2: Convert to fraction form
    15,448.86/21,310.65 = 9,478.35/x
  3. Step 3: Cross multiply
    15,448.86x = 21,310.65 × 9,478.35
  4. Step 4: Simplify right side
    15,448.86x = 201,989,799.43
  5. Step 5: Solve for x
    x = 201,989,799.43/15,448.86
  6. Step 6: Final answer
    x = 13,074.74

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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.