Home / 13,155.17-18,150.93-7,488.63

Finding the Fourth Proportional to 13,155.17, 18,150.93 and 7,488.63

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Solution

The fourth proportional to 13,155.17, 18,150.93 and 7,488.63 is: 10,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.17 : 18,150.93 = 7,488.63 : x
  2. Step 2: Convert to fraction form
    13,155.17/18,150.93 = 7,488.63/x
  3. Step 3: Cross multiply
    13,155.17x = 18,150.93 × 7,488.63
  4. Step 4: Simplify right side
    13,155.17x = 135,925,598.93
  5. Step 5: Solve for x
    x = 135,925,598.93/13,155.17
  6. Step 6: Final answer
    x = 10,332.49

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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.