Home / 30,771.90-46,139.40-14,111.06

Finding the Fourth Proportional to 30,771.90, 46,139.40 and 14,111.06

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Solution

The fourth proportional to 30,771.90, 46,139.40 and 14,111.06 is: 21,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,771.90 : 46,139.40 = 14,111.06 : x
  2. Step 2: Convert to fraction form
    30,771.90/46,139.40 = 14,111.06/x
  3. Step 3: Cross multiply
    30,771.90x = 46,139.40 × 14,111.06
  4. Step 4: Simplify right side
    30,771.90x = 651,075,957.11
  5. Step 5: Solve for x
    x = 651,075,957.11/30,771.90
  6. Step 6: Final answer
    x = 21,158.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.