Home / 15,389.91-21,229.76-10,294.23

Finding the Fourth Proportional to 15,389.91, 21,229.76 and 10,294.23

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Solution

The fourth proportional to 15,389.91, 21,229.76 and 10,294.23 is: 14,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.91 : 21,229.76 = 10,294.23 : x
  2. Step 2: Convert to fraction form
    15,389.91/21,229.76 = 10,294.23/x
  3. Step 3: Cross multiply
    15,389.91x = 21,229.76 × 10,294.23
  4. Step 4: Simplify right side
    15,389.91x = 218,543,980.81
  5. Step 5: Solve for x
    x = 218,543,980.81/15,389.91
  6. Step 6: Final answer
    x = 14,200.47

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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.