Home / 15,259.28-21,061.92-8,975.84

Finding the Fourth Proportional to 15,259.28, 21,061.92 and 8,975.84

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Solution

The fourth proportional to 15,259.28, 21,061.92 and 8,975.84 is: 12,389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,259.28 : 21,061.92 = 8,975.84 : x
  2. Step 2: Convert to fraction form
    15,259.28/21,061.92 = 8,975.84/x
  3. Step 3: Cross multiply
    15,259.28x = 21,061.92 × 8,975.84
  4. Step 4: Simplify right side
    15,259.28x = 189,048,424.01
  5. Step 5: Solve for x
    x = 189,048,424.01/15,259.28
  6. Step 6: Final answer
    x = 12,389.08

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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.