Home / 20,870.06-31,307.02-7,546.39

Finding the Fourth Proportional to 20,870.06, 31,307.02 and 7,546.39

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Solution

The fourth proportional to 20,870.06, 31,307.02 and 7,546.39 is: 11,320.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.06 : 31,307.02 = 7,546.39 : x
  2. Step 2: Convert to fraction form
    20,870.06/31,307.02 = 7,546.39/x
  3. Step 3: Cross multiply
    20,870.06x = 31,307.02 × 7,546.39
  4. Step 4: Simplify right side
    20,870.06x = 236,254,885.52
  5. Step 5: Solve for x
    x = 236,254,885.52/20,870.06
  6. Step 6: Final answer
    x = 11,320.28

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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.