Home / 38,315.51-52,870.76-21,315.74

Finding the Fourth Proportional to 38,315.51, 52,870.76 and 21,315.74

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Solution

The fourth proportional to 38,315.51, 52,870.76 and 21,315.74 is: 29,413.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,315.51 : 52,870.76 = 21,315.74 : x
  2. Step 2: Convert to fraction form
    38,315.51/52,870.76 = 21,315.74/x
  3. Step 3: Cross multiply
    38,315.51x = 52,870.76 × 21,315.74
  4. Step 4: Simplify right side
    38,315.51x = 1,126,979,082.76
  5. Step 5: Solve for x
    x = 1,126,979,082.76/38,315.51
  6. Step 6: Final answer
    x = 29,413.13

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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.