Home / 10,113.63-13,957.16-5,637.21

Finding the Fourth Proportional to 10,113.63, 13,957.16 and 5,637.21

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Solution

The fourth proportional to 10,113.63, 13,957.16 and 5,637.21 is: 7,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,113.63 : 13,957.16 = 5,637.21 : x
  2. Step 2: Convert to fraction form
    10,113.63/13,957.16 = 5,637.21/x
  3. Step 3: Cross multiply
    10,113.63x = 13,957.16 × 5,637.21
  4. Step 4: Simplify right side
    10,113.63x = 78,679,413.74
  5. Step 5: Solve for x
    x = 78,679,413.74/10,113.63
  6. Step 6: Final answer
    x = 7,779.54

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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.