Home / 12,588.04-18,775.86-10,931.56

Finding the Fourth Proportional to 12,588.04, 18,775.86 and 10,931.56

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Solution

The fourth proportional to 12,588.04, 18,775.86 and 10,931.56 is: 16,305.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.04 : 18,775.86 = 10,931.56 : x
  2. Step 2: Convert to fraction form
    12,588.04/18,775.86 = 10,931.56/x
  3. Step 3: Cross multiply
    12,588.04x = 18,775.86 × 10,931.56
  4. Step 4: Simplify right side
    12,588.04x = 205,249,440.14
  5. Step 5: Solve for x
    x = 205,249,440.14/12,588.04
  6. Step 6: Final answer
    x = 16,305.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.