Home / 15,504.43-21,359.95-10,780.51

Finding the Fourth Proportional to 15,504.43, 21,359.95 and 10,780.51

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Solution

The fourth proportional to 15,504.43, 21,359.95 and 10,780.51 is: 14,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.43 : 21,359.95 = 10,780.51 : x
  2. Step 2: Convert to fraction form
    15,504.43/21,359.95 = 10,780.51/x
  3. Step 3: Cross multiply
    15,504.43x = 21,359.95 × 10,780.51
  4. Step 4: Simplify right side
    15,504.43x = 230,271,154.57
  5. Step 5: Solve for x
    x = 230,271,154.57/15,504.43
  6. Step 6: Final answer
    x = 14,851.96

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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.