Home / 13,756.04-18,984.51-7,788.76

Finding the Fourth Proportional to 13,756.04, 18,984.51 and 7,788.76

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Solution

The fourth proportional to 13,756.04, 18,984.51 and 7,788.76 is: 10,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.04 : 18,984.51 = 7,788.76 : x
  2. Step 2: Convert to fraction form
    13,756.04/18,984.51 = 7,788.76/x
  3. Step 3: Cross multiply
    13,756.04x = 18,984.51 × 7,788.76
  4. Step 4: Simplify right side
    13,756.04x = 147,865,792.11
  5. Step 5: Solve for x
    x = 147,865,792.11/13,756.04
  6. Step 6: Final answer
    x = 10,749.15

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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.