Home / 30,655.95-42,320.52-20,061.77

Finding the Fourth Proportional to 30,655.95, 42,320.52 and 20,061.77

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Solution

The fourth proportional to 30,655.95, 42,320.52 and 20,061.77 is: 27,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.95 : 42,320.52 = 20,061.77 : x
  2. Step 2: Convert to fraction form
    30,655.95/42,320.52 = 20,061.77/x
  3. Step 3: Cross multiply
    30,655.95x = 42,320.52 × 20,061.77
  4. Step 4: Simplify right side
    30,655.95x = 849,024,326.92
  5. Step 5: Solve for x
    x = 849,024,326.92/30,655.95
  6. Step 6: Final answer
    x = 27,695.25

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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.