Home / 15,695.13-21,660.30-10,980.93

Finding the Fourth Proportional to 15,695.13, 21,660.30 and 10,980.93

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Solution

The fourth proportional to 15,695.13, 21,660.30 and 10,980.93 is: 15,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.13 : 21,660.30 = 10,980.93 : x
  2. Step 2: Convert to fraction form
    15,695.13/21,660.30 = 10,980.93/x
  3. Step 3: Cross multiply
    15,695.13x = 21,660.30 × 10,980.93
  4. Step 4: Simplify right side
    15,695.13x = 237,850,238.08
  5. Step 5: Solve for x
    x = 237,850,238.08/15,695.13
  6. Step 6: Final answer
    x = 15,154.40

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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.