Home / 15,501.84-21,392.44-8,428.27

Finding the Fourth Proportional to 15,501.84, 21,392.44 and 8,428.27

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Solution

The fourth proportional to 15,501.84, 21,392.44 and 8,428.27 is: 11,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.84 : 21,392.44 = 8,428.27 : x
  2. Step 2: Convert to fraction form
    15,501.84/21,392.44 = 8,428.27/x
  3. Step 3: Cross multiply
    15,501.84x = 21,392.44 × 8,428.27
  4. Step 4: Simplify right side
    15,501.84x = 180,301,111.18
  5. Step 5: Solve for x
    x = 180,301,111.18/15,501.84
  6. Step 6: Final answer
    x = 11,630.95

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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.