Home / 15,358.75-21,187.34-8,981.17

Finding the Fourth Proportional to 15,358.75, 21,187.34 and 8,981.17

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Solution

The fourth proportional to 15,358.75, 21,187.34 and 8,981.17 is: 12,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.75 : 21,187.34 = 8,981.17 : x
  2. Step 2: Convert to fraction form
    15,358.75/21,187.34 = 8,981.17/x
  3. Step 3: Cross multiply
    15,358.75x = 21,187.34 × 8,981.17
  4. Step 4: Simplify right side
    15,358.75x = 190,287,038.19
  5. Step 5: Solve for x
    x = 190,287,038.19/15,358.75
  6. Step 6: Final answer
    x = 12,389.48

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Double scale
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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.