Home / 15,315.64-21,133.04-9,027.16

Finding the Fourth Proportional to 15,315.64, 21,133.04 and 9,027.16

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Solution

The fourth proportional to 15,315.64, 21,133.04 and 9,027.16 is: 12,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.64 : 21,133.04 = 9,027.16 : x
  2. Step 2: Convert to fraction form
    15,315.64/21,133.04 = 9,027.16/x
  3. Step 3: Cross multiply
    15,315.64x = 21,133.04 × 9,027.16
  4. Step 4: Simplify right side
    15,315.64x = 190,771,333.37
  5. Step 5: Solve for x
    x = 190,771,333.37/15,315.64
  6. Step 6: Final answer
    x = 12,455.98

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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.