Home / 39,117.04-53,981.76-21,212.32

Finding the Fourth Proportional to 39,117.04, 53,981.76 and 21,212.32

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Solution

The fourth proportional to 39,117.04, 53,981.76 and 21,212.32 is: 29,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,117.04 : 53,981.76 = 21,212.32 : x
  2. Step 2: Convert to fraction form
    39,117.04/53,981.76 = 21,212.32/x
  3. Step 3: Cross multiply
    39,117.04x = 53,981.76 × 21,212.32
  4. Step 4: Simplify right side
    39,117.04x = 1,145,078,367.28
  5. Step 5: Solve for x
    x = 1,145,078,367.28/39,117.04
  6. Step 6: Final answer
    x = 29,273.13

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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.