Home / 12,775.45-19,159.68-8,088.40

Finding the Fourth Proportional to 12,775.45, 19,159.68 and 8,088.40

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Solution

The fourth proportional to 12,775.45, 19,159.68 and 8,088.40 is: 12,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.45 : 19,159.68 = 8,088.40 : x
  2. Step 2: Convert to fraction form
    12,775.45/19,159.68 = 8,088.40/x
  3. Step 3: Cross multiply
    12,775.45x = 19,159.68 × 8,088.40
  4. Step 4: Simplify right side
    12,775.45x = 154,971,155.71
  5. Step 5: Solve for x
    x = 154,971,155.71/12,775.45
  6. Step 6: Final answer
    x = 12,130.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.