Home / 18,436.32-25,436.76-10,478.40

Finding the Fourth Proportional to 18,436.32, 25,436.76 and 10,478.40

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Solution

The fourth proportional to 18,436.32, 25,436.76 and 10,478.40 is: 14,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.32 : 25,436.76 = 10,478.40 : x
  2. Step 2: Convert to fraction form
    18,436.32/25,436.76 = 10,478.40/x
  3. Step 3: Cross multiply
    18,436.32x = 25,436.76 × 10,478.40
  4. Step 4: Simplify right side
    18,436.32x = 266,536,545.98
  5. Step 5: Solve for x
    x = 266,536,545.98/18,436.32
  6. Step 6: Final answer
    x = 14,457.14

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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.