Home / 15,585.16-21,507.52-9,214.06

Finding the Fourth Proportional to 15,585.16, 21,507.52 and 9,214.06

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Solution

The fourth proportional to 15,585.16, 21,507.52 and 9,214.06 is: 12,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.16 : 21,507.52 = 9,214.06 : x
  2. Step 2: Convert to fraction form
    15,585.16/21,507.52 = 9,214.06/x
  3. Step 3: Cross multiply
    15,585.16x = 21,507.52 × 9,214.06
  4. Step 4: Simplify right side
    15,585.16x = 198,171,579.73
  5. Step 5: Solve for x
    x = 198,171,579.73/15,585.16
  6. Step 6: Final answer
    x = 12,715.40

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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.