Home / 35,685.40-53,528.10-20,886.70

Finding the Fourth Proportional to 35,685.40, 53,528.10 and 20,886.70

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Solution

The fourth proportional to 35,685.40, 53,528.10 and 20,886.70 is: 31,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,685.40 : 53,528.10 = 20,886.70 : x
  2. Step 2: Convert to fraction form
    35,685.40/53,528.10 = 20,886.70/x
  3. Step 3: Cross multiply
    35,685.40x = 53,528.10 × 20,886.70
  4. Step 4: Simplify right side
    35,685.40x = 1,118,025,366.27
  5. Step 5: Solve for x
    x = 1,118,025,366.27/35,685.40
  6. Step 6: Final answer
    x = 31,330.05

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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.