Home / 15,290.46-21,099.15-8,574.70

Finding the Fourth Proportional to 15,290.46, 21,099.15 and 8,574.70

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Solution

The fourth proportional to 15,290.46, 21,099.15 and 8,574.70 is: 11,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.46 : 21,099.15 = 8,574.70 : x
  2. Step 2: Convert to fraction form
    15,290.46/21,099.15 = 8,574.70/x
  3. Step 3: Cross multiply
    15,290.46x = 21,099.15 × 8,574.70
  4. Step 4: Simplify right side
    15,290.46x = 180,918,881.51
  5. Step 5: Solve for x
    x = 180,918,881.51/15,290.46
  6. Step 6: Final answer
    x = 11,832.14

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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.