Home / 15,474.28-21,356.58-9,811.84

Finding the Fourth Proportional to 15,474.28, 21,356.58 and 9,811.84

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Solution

The fourth proportional to 15,474.28, 21,356.58 and 9,811.84 is: 13,541.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.28 : 21,356.58 = 9,811.84 : x
  2. Step 2: Convert to fraction form
    15,474.28/21,356.58 = 9,811.84/x
  3. Step 3: Cross multiply
    15,474.28x = 21,356.58 × 9,811.84
  4. Step 4: Simplify right side
    15,474.28x = 209,547,345.91
  5. Step 5: Solve for x
    x = 209,547,345.91/15,474.28
  6. Step 6: Final answer
    x = 13,541.65

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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.