Home / 30,719.81-42,384.85-17,290.28

Finding the Fourth Proportional to 30,719.81, 42,384.85 and 17,290.28

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Solution

The fourth proportional to 30,719.81, 42,384.85 and 17,290.28 is: 23,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,719.81 : 42,384.85 = 17,290.28 : x
  2. Step 2: Convert to fraction form
    30,719.81/42,384.85 = 17,290.28/x
  3. Step 3: Cross multiply
    30,719.81x = 42,384.85 × 17,290.28
  4. Step 4: Simplify right side
    30,719.81x = 732,845,669.11
  5. Step 5: Solve for x
    x = 732,845,669.11/30,719.81
  6. Step 6: Final answer
    x = 23,855.80

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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.