Home / 15,570.62-21,488.05-8,856.87

Finding the Fourth Proportional to 15,570.62, 21,488.05 and 8,856.87

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Solution

The fourth proportional to 15,570.62, 21,488.05 and 8,856.87 is: 12,222.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,570.62 : 21,488.05 = 8,856.87 : x
  2. Step 2: Convert to fraction form
    15,570.62/21,488.05 = 8,856.87/x
  3. Step 3: Cross multiply
    15,570.62x = 21,488.05 × 8,856.87
  4. Step 4: Simplify right side
    15,570.62x = 190,316,865.40
  5. Step 5: Solve for x
    x = 190,316,865.40/15,570.62
  6. Step 6: Final answer
    x = 12,222.82

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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.