Home / 18,769.76-25,902-10,386.08

Finding the Fourth Proportional to 18,769.76, 25,902 and 10,386.08

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Solution

The fourth proportional to 18,769.76, 25,902 and 10,386.08 is: 14,332.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.76 : 25,902 = 10,386.08 : x
  2. Step 2: Convert to fraction form
    18,769.76/25,902 = 10,386.08/x
  3. Step 3: Cross multiply
    18,769.76x = 25,902 × 10,386.08
  4. Step 4: Simplify right side
    18,769.76x = 269,020,244.16
  5. Step 5: Solve for x
    x = 269,020,244.16/18,769.76
  6. Step 6: Final answer
    x = 14,332.64

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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.