Home / 15,319.28-21,148.67-10,309.84

Finding the Fourth Proportional to 15,319.28, 21,148.67 and 10,309.84

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Solution

The fourth proportional to 15,319.28, 21,148.67 and 10,309.84 is: 14,233.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.28 : 21,148.67 = 10,309.84 : x
  2. Step 2: Convert to fraction form
    15,319.28/21,148.67 = 10,309.84/x
  3. Step 3: Cross multiply
    15,319.28x = 21,148.67 × 10,309.84
  4. Step 4: Simplify right side
    15,319.28x = 218,039,376.82
  5. Step 5: Solve for x
    x = 218,039,376.82/15,319.28
  6. Step 6: Final answer
    x = 14,233.00

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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.