Home / 28,248.71-38,981.91-15,501.57

Finding the Fourth Proportional to 28,248.71, 38,981.91 and 15,501.57

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Solution

The fourth proportional to 28,248.71, 38,981.91 and 15,501.57 is: 21,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,248.71 : 38,981.91 = 15,501.57 : x
  2. Step 2: Convert to fraction form
    28,248.71/38,981.91 = 15,501.57/x
  3. Step 3: Cross multiply
    28,248.71x = 38,981.91 × 15,501.57
  4. Step 4: Simplify right side
    28,248.71x = 604,280,806.60
  5. Step 5: Solve for x
    x = 604,280,806.60/28,248.71
  6. Step 6: Final answer
    x = 21,391.45

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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.