Home / 19,391.90-29,051.40-9,999.95

Finding the Fourth Proportional to 19,391.90, 29,051.40 and 9,999.95

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Solution

The fourth proportional to 19,391.90, 29,051.40 and 9,999.95 is: 14,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.90 : 29,051.40 = 9,999.95 : x
  2. Step 2: Convert to fraction form
    19,391.90/29,051.40 = 9,999.95/x
  3. Step 3: Cross multiply
    19,391.90x = 29,051.40 × 9,999.95
  4. Step 4: Simplify right side
    19,391.90x = 290,512,547.43
  5. Step 5: Solve for x
    x = 290,512,547.43/19,391.90
  6. Step 6: Final answer
    x = 14,981.13

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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.