Home / 15,458.61-21,309.21-9,479.19

Finding the Fourth Proportional to 15,458.61, 21,309.21 and 9,479.19

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Solution

The fourth proportional to 15,458.61, 21,309.21 and 9,479.19 is: 13,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.61 : 21,309.21 = 9,479.19 : x
  2. Step 2: Convert to fraction form
    15,458.61/21,309.21 = 9,479.19/x
  3. Step 3: Cross multiply
    15,458.61x = 21,309.21 × 9,479.19
  4. Step 4: Simplify right side
    15,458.61x = 201,994,050.34
  5. Step 5: Solve for x
    x = 201,994,050.34/15,458.61
  6. Step 6: Final answer
    x = 13,066.77

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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.