Home / 15,803.70-21,798.90-9,425.76

Finding the Fourth Proportional to 15,803.70, 21,798.90 and 9,425.76

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Solution

The fourth proportional to 15,803.70, 21,798.90 and 9,425.76 is: 13,001.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.70 : 21,798.90 = 9,425.76 : x
  2. Step 2: Convert to fraction form
    15,803.70/21,798.90 = 9,425.76/x
  3. Step 3: Cross multiply
    15,803.70x = 21,798.90 × 9,425.76
  4. Step 4: Simplify right side
    15,803.70x = 205,471,199.66
  5. Step 5: Solve for x
    x = 205,471,199.66/15,803.70
  6. Step 6: Final answer
    x = 13,001.46

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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.