Home / 15,585.70-21,505.34-8,870.92

Finding the Fourth Proportional to 15,585.70, 21,505.34 and 8,870.92

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Solution

The fourth proportional to 15,585.70, 21,505.34 and 8,870.92 is: 12,240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.70 : 21,505.34 = 8,870.92 : x
  2. Step 2: Convert to fraction form
    15,585.70/21,505.34 = 8,870.92/x
  3. Step 3: Cross multiply
    15,585.70x = 21,505.34 × 8,870.92
  4. Step 4: Simplify right side
    15,585.70x = 190,772,150.71
  5. Step 5: Solve for x
    x = 190,772,150.71/15,585.70
  6. Step 6: Final answer
    x = 12,240.20

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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.