Home / 30,985.93-42,762.09-17,557.75

Finding the Fourth Proportional to 30,985.93, 42,762.09 and 17,557.75

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Solution

The fourth proportional to 30,985.93, 42,762.09 and 17,557.75 is: 24,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.93 : 42,762.09 = 17,557.75 : x
  2. Step 2: Convert to fraction form
    30,985.93/42,762.09 = 17,557.75/x
  3. Step 3: Cross multiply
    30,985.93x = 42,762.09 × 17,557.75
  4. Step 4: Simplify right side
    30,985.93x = 750,806,085.70
  5. Step 5: Solve for x
    x = 750,806,085.70/30,985.93
  6. Step 6: Final answer
    x = 24,230.55

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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.