Home / 35,218.40-48,607.12-20,111.20

Finding the Fourth Proportional to 35,218.40, 48,607.12 and 20,111.20

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Solution

The fourth proportional to 35,218.40, 48,607.12 and 20,111.20 is: 27,756.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,218.40 : 48,607.12 = 20,111.20 : x
  2. Step 2: Convert to fraction form
    35,218.40/48,607.12 = 20,111.20/x
  3. Step 3: Cross multiply
    35,218.40x = 48,607.12 × 20,111.20
  4. Step 4: Simplify right side
    35,218.40x = 977,547,511.74
  5. Step 5: Solve for x
    x = 977,547,511.74/35,218.40
  6. Step 6: Final answer
    x = 27,756.73

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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.