Home / 15,809.90-21,820.73-10,151.80

Finding the Fourth Proportional to 15,809.90, 21,820.73 and 10,151.80

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Solution

The fourth proportional to 15,809.90, 21,820.73 and 10,151.80 is: 14,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.90 : 21,820.73 = 10,151.80 : x
  2. Step 2: Convert to fraction form
    15,809.90/21,820.73 = 10,151.80/x
  3. Step 3: Cross multiply
    15,809.90x = 21,820.73 × 10,151.80
  4. Step 4: Simplify right side
    15,809.90x = 221,519,581.50
  5. Step 5: Solve for x
    x = 221,519,581.50/15,809.90
  6. Step 6: Final answer
    x = 14,011.45

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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.