Home / 18,831.69-25,988.45-10,449.81

Finding the Fourth Proportional to 18,831.69, 25,988.45 and 10,449.81

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Solution

The fourth proportional to 18,831.69, 25,988.45 and 10,449.81 is: 14,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.69 : 25,988.45 = 10,449.81 : x
  2. Step 2: Convert to fraction form
    18,831.69/25,988.45 = 10,449.81/x
  3. Step 3: Cross multiply
    18,831.69x = 25,988.45 × 10,449.81
  4. Step 4: Simplify right side
    18,831.69x = 271,574,312.45
  5. Step 5: Solve for x
    x = 271,574,312.45/18,831.69
  6. Step 6: Final answer
    x = 14,421.13

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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.