Finding the Fourth Proportional to 21,312,966.16, 29,414,587.08 and 13,976,971.12
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Solution
The fourth proportional to 21,312,966.16, 29,414,587.08 and 13,976,971.12 is: 19,289,986.72
Step by Step Solution
- Step 1: Write the proportion equation
21,312,966.16 : 29,414,587.08 = 13,976,971.12 : x - Step 2: Convert to fraction form
21,312,966.16/29,414,587.08 = 13,976,971.12/x - Step 3: Cross multiply
21,312,966.16x = 29,414,587.08 × 13,976,971.12 - Step 4: Simplify right side
21,312,966.16x = 411,126,834,123,885.06 - Step 5: Solve for x
x = 411,126,834,123,885.06/21,312,966.16 - Step 6: Final answer
x = 19,289,986.72
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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.