Home / 13,437.71-20,158.28-4,428.80

Finding the Fourth Proportional to 13,437.71, 20,158.28 and 4,428.80

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Solution

The fourth proportional to 13,437.71, 20,158.28 and 4,428.80 is: 6,643.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.71 : 20,158.28 = 4,428.80 : x
  2. Step 2: Convert to fraction form
    13,437.71/20,158.28 = 4,428.80/x
  3. Step 3: Cross multiply
    13,437.71x = 20,158.28 × 4,428.80
  4. Step 4: Simplify right side
    13,437.71x = 89,276,968.32
  5. Step 5: Solve for x
    x = 89,276,968.32/13,437.71
  6. Step 6: Final answer
    x = 6,643.77

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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.