Home / 38,685.16-53,389.95-21,693.99

Finding the Fourth Proportional to 38,685.16, 53,389.95 and 21,693.99

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Solution

The fourth proportional to 38,685.16, 53,389.95 and 21,693.99 is: 29,940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,685.16 : 53,389.95 = 21,693.99 : x
  2. Step 2: Convert to fraction form
    38,685.16/53,389.95 = 21,693.99/x
  3. Step 3: Cross multiply
    38,685.16x = 53,389.95 × 21,693.99
  4. Step 4: Simplify right side
    38,685.16x = 1,158,241,041.40
  5. Step 5: Solve for x
    x = 1,158,241,041.40/38,685.16
  6. Step 6: Final answer
    x = 29,940.19

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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.