Home / 35,420.49-48,875.08-20,313.78

Finding the Fourth Proportional to 35,420.49, 48,875.08 and 20,313.78

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Solution

The fourth proportional to 35,420.49, 48,875.08 and 20,313.78 is: 28,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.49 : 48,875.08 = 20,313.78 : x
  2. Step 2: Convert to fraction form
    35,420.49/48,875.08 = 20,313.78/x
  3. Step 3: Cross multiply
    35,420.49x = 48,875.08 × 20,313.78
  4. Step 4: Simplify right side
    35,420.49x = 992,837,521.03
  5. Step 5: Solve for x
    x = 992,837,521.03/35,420.49
  6. Step 6: Final answer
    x = 28,030.04

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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.