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Finding the Fourth Proportional to 13,570.66, 20,353.95 and 7,950.91

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Solution

The fourth proportional to 13,570.66, 20,353.95 and 7,950.91 is: 11,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.66 : 20,353.95 = 7,950.91 : x
  2. Step 2: Convert to fraction form
    13,570.66/20,353.95 = 7,950.91/x
  3. Step 3: Cross multiply
    13,570.66x = 20,353.95 × 7,950.91
  4. Step 4: Simplify right side
    13,570.66x = 161,832,424.59
  5. Step 5: Solve for x
    x = 161,832,424.59/13,570.66
  6. Step 6: Final answer
    x = 11,925.17

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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.