Home / 30,455.78-42,041.93-18,522.95

Finding the Fourth Proportional to 30,455.78, 42,041.93 and 18,522.95

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Solution

The fourth proportional to 30,455.78, 42,041.93 and 18,522.95 is: 25,569.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.78 : 42,041.93 = 18,522.95 : x
  2. Step 2: Convert to fraction form
    30,455.78/42,041.93 = 18,522.95/x
  3. Step 3: Cross multiply
    30,455.78x = 42,041.93 × 18,522.95
  4. Step 4: Simplify right side
    30,455.78x = 778,740,264.47
  5. Step 5: Solve for x
    x = 778,740,264.47/30,455.78
  6. Step 6: Final answer
    x = 25,569.54

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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.