Home / 39,283.08-54,210.29-21,378.11

Finding the Fourth Proportional to 39,283.08, 54,210.29 and 21,378.11

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Solution

The fourth proportional to 39,283.08, 54,210.29 and 21,378.11 is: 29,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283.08 : 54,210.29 = 21,378.11 : x
  2. Step 2: Convert to fraction form
    39,283.08/54,210.29 = 21,378.11/x
  3. Step 3: Cross multiply
    39,283.08x = 54,210.29 × 21,378.11
  4. Step 4: Simplify right side
    39,283.08x = 1,158,913,164.81
  5. Step 5: Solve for x
    x = 1,158,913,164.81/39,283.08
  6. Step 6: Final answer
    x = 29,501.59

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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.