Home / 28,100.16-38,777.76-15,526.08

Finding the Fourth Proportional to 28,100.16, 38,777.76 and 15,526.08

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Solution

The fourth proportional to 28,100.16, 38,777.76 and 15,526.08 is: 21,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.16 : 38,777.76 = 15,526.08 : x
  2. Step 2: Convert to fraction form
    28,100.16/38,777.76 = 15,526.08/x
  3. Step 3: Cross multiply
    28,100.16x = 38,777.76 × 15,526.08
  4. Step 4: Simplify right side
    28,100.16x = 602,066,603.98
  5. Step 5: Solve for x
    x = 602,066,603.98/28,100.16
  6. Step 6: Final answer
    x = 21,425.74

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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.