Home / 20,875.32-31,312.98-15,953.76

Finding the Fourth Proportional to 20,875.32, 31,312.98 and 15,953.76

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Solution

The fourth proportional to 20,875.32, 31,312.98 and 15,953.76 is: 23,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.32 : 31,312.98 = 15,953.76 : x
  2. Step 2: Convert to fraction form
    20,875.32/31,312.98 = 15,953.76/x
  3. Step 3: Cross multiply
    20,875.32x = 31,312.98 × 15,953.76
  4. Step 4: Simplify right side
    20,875.32x = 499,559,767.80
  5. Step 5: Solve for x
    x = 499,559,767.80/20,875.32
  6. Step 6: Final answer
    x = 23,930.64

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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.