Home / 15,510.56-21,417.01-10,786.64

Finding the Fourth Proportional to 15,510.56, 21,417.01 and 10,786.64

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Solution

The fourth proportional to 15,510.56, 21,417.01 and 10,786.64 is: 14,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.56 : 21,417.01 = 10,786.64 : x
  2. Step 2: Convert to fraction form
    15,510.56/21,417.01 = 10,786.64/x
  3. Step 3: Cross multiply
    15,510.56x = 21,417.01 × 10,786.64
  4. Step 4: Simplify right side
    15,510.56x = 231,017,442.69
  5. Step 5: Solve for x
    x = 231,017,442.69/15,510.56
  6. Step 6: Final answer
    x = 14,894.21

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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.