Home / 18,790.86-25,931.40-10,407.36

Finding the Fourth Proportional to 18,790.86, 25,931.40 and 10,407.36

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Solution

The fourth proportional to 18,790.86, 25,931.40 and 10,407.36 is: 14,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.86 : 25,931.40 = 10,407.36 : x
  2. Step 2: Convert to fraction form
    18,790.86/25,931.40 = 10,407.36/x
  3. Step 3: Cross multiply
    18,790.86x = 25,931.40 × 10,407.36
  4. Step 4: Simplify right side
    18,790.86x = 269,877,415.10
  5. Step 5: Solve for x
    x = 269,877,415.10/18,790.86
  6. Step 6: Final answer
    x = 14,362.16

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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.